Resumen (Introducción): La vertiente Caribe de América Central se encuentra a barlovento de los vientos alisios asociados con la Alta Subtropical del Atlántico Norte y presenta un ciclo anual de precipitación bimodal, donde se observa un mínimo relativo en los meses de septiembre y octubre. (Objetivo): Caracterizar el descenso observado en las lluvias en esta región en ese bimestre, estimando, para cada evento, las variables asociadas con los valores del día del inicio, día del mínimo, día del final, duración, intensidad y magnitud, en el periodo 1979-2010. (Metodología): Se usaron 31 registros diarios de estaciones pluviométricas. Se examinó, en cada una de ellas, los meses de julio a noviembre, para encontrar los valores del mínimo, la fecha del mínimo, del inicio y del final, duración e intensidad. Se exploró la ocurrencia de alguna tendencia temporal o espacial en las características de los eventos. Por último, se revisaron diferentes índices climáticos y fuentes documentales para identificar las posibles causas sinópticas de los descensos más fuertes en las lluvias. (Resultados): El inicio de los eventos se observó alrededor del 3 de septiembre, su mínimo el 23 de septiembre y el final 12 de octubre, con una duración aproximada de 39 días. Los eventos tienden a suceder primeramente en las estaciones ubicadas al noroeste del istmo. Los eventos más secos sucedieron bajo condiciones propicias para la ocurrencia de vientos con componente suroeste-oeste sobre la región. (Conclusiones): El conocimiento sobre estas características de la precipitación ayuda en la planificación de sectores socioeconómicos claves en América Central ante eventuales eventos hidrometeorológicos adversos.

Abstract (Introduction): The Caribbean slope of Central America is located windward about the trade winds associated with the North Atlantic Subtropical High and the rains present a bimodal annual cycle, observing a relative minimum in the months of September and October. (Objective): Characterize the observed decrease in rainfall in this region for this bimester, estimating for each event, the variables associated with the values of the onset day, minimum day, demise day, duration, intensity, and magnitude, in 1979-2010. (Methodology): A set of 31 daily records from rain gauge stations was used. In each of them, the months from July to November were examined to find the values of the minimum, the date of the minimum, the onset and the demise, duration, and intensity. The occurrence of any temporal or spatial trend in these characteristics of the events was explored. Finally, different climatic indices and documentary sources were reviewed to identify the possible synoptic causes of the strongest decreases in rainfall. (Results): The beginning of the events was observed around September 3rd, their minimum on September 23rd and the end on October 12th, with an approximate duration of 39 days. Events tend to happen earlier at stations located northwest on the isthmus. The driest events occurred under favorable conditions for the occurrence of winds with a southwest-west component over the region. (Conclusions): Knowledge about these characteristics of precipitation helps in the activity planning of key socioeconomic sectors in Central America in case of adverse hydrometeorological events.

Abstract The “public policy for the full guarantee of the rights of LGBT people”and on gender identities and sexual orientations in the Capital District has been implemented for almost 12 years. After its formalization, it has been implemented during the four district administrations that have governed. During this period, it has materialized through programs that have had the general objective of “guaranteeing the full exercise of the rights of people from the LGBT sectors as part of the production, social management and collective well-being of the city” (Concejo de Bogotá, 2009, p. 2); through four strategic processes: i) institutional strengthening at the district and local levels; ii) co-responsibility in the exercise of rights; iii) communication and education for cultural change; and iv) the production and application of knowledge (Acuerdo 371, 2009). This document analyzes the factors that led to its adoption in Bogotá, presents some of its main achievements, and offers recommendations for its strengthening. For the analysis, the application of the multiple currents approach is used as the main theoretical model. This approach focuses on understanding the political dynamics and processes that, at different levels and occurring independently and in parallel, have managed to come together at a specific moment (window of opportunity) to position politics as a viable institutional alternative based on the action of some political entrepreneurs (Zahariadis, 2010). In order to take stock of joint actions and to take into account how cultural and collective imaginaries about the community have affected their impact, the analysis is complemented by the framework of promoting coalitions (Sabatier y Weible, 2010) and the social construction framework and policy design (Ingram et al. 2010).

Resumen La “política pública para la garantía plena de los derechos de las personas LGBT” y sobre identidades de género y orientaciones sexuales en el Distrito Capital lleva casi 12 años en implementación. Después de su formalización, ha sido implementada durante las cuatro administraciones distritales que han gobernado desde entonces. Durante este periodo, se ha materializado a través de programas que han tenido por objetivo general “garantizar el ejercicio pleno de derechos de las personas de los sectores LGBT como parte de la producción, gestión social y bienestar colectivo de la ciudad”(Concejo de Bogotá, 2009, p. 2); esto, por medio del desarrollo de cuatro procesos estratégicos: i) el fortalecimiento institucional en los niveles distritales y locales; ii) la corresponsabilidad en el ejercicio de derechos; iii) la comunicación y educación para el cambio cultural; y iv) la producción y aplicación de conocimientos y saberes (Acuerdo 371, 2009). Este documento analiza los factores que llevaron a su adopción en Bogotá, presenta algunos de sus principales logros y ofrece recomendaciones para su fortalecimiento. Para el análisis se recurre a la aplicación del enfoque de las corrientes múltiples como modelo teórico principal; este enfoque se concentra en entender las dinámicas y procesos políticos que, en distintos niveles y ocurriendo de manera independiente y paralela, han logrado confluir en un momento específico (ventana de oportunidad) para posicionar a la política como una alternativa institucional viable a partir de la acción de unos emprendedores de política (Zahariadis, 2010). Con el fin de hacer un balance sobre las acciones conjuntas y para tener en cuenta cómo los imaginarios culturales y colectivos sobre la comunidad han afectado su incidencia, el análisis se complementa con el marco de las coaliciones promotoras (Sabatier y Weible, 2010) y el marco de la construcción social y diseño de políticas (Ingram et al., 2010).

ABSTRACT The union of theory and practice is crucial for equitable teaching, and flexible and effective strategies are required to ensure inclusion. The objective of this article was to propose strategies for the participation of students with disabilities in Physical Education classes. Twenty-two works focused on inclusion strategies for Physical Education were reviewed in the SciELO, Google Academic and Dialnet databases. Based on the results obtained, the systematization was carried out and strategies were designed to improve the learning experience and promote equality, including those that adapt to the curriculum and activities; those of teacher training and awareness; and, those with an inclusive culture and positive environment. It is concluded that educational inclusion is a complex process that demands changes in attitudes, methodologies and educational policies.

RESUMEN La unión de la teoría y la práctica es crucial para una enseñanza equitativa, además se requiere de estrategias flexibles y efectivas para asegurar la inclusión. El objetivo de este artículo fue proponer estrategias para la participación de estudiantes con discapacidad en las clases de Educación Física. Se revisaron 22 trabajos centrados en estrategias de inclusión para Educación Física en las bases de datos SciELO, Google Académico y Dialnet. A partir de los resultados obtenidos, se procedió a la sistematización y se diseñaron estrategias para mejorar la experiencia de aprendizaje y promover la igualdad, entre ellas las que se adaptan al currículo y actividades; las de formación y sensibilización docente; y, las de cultura inclusiva y ambiente positivo. Se concluye que la inclusión educativa es un proceso complejo que demanda cambios en actitudes, metodologías y políticas educativas.

RESUMO O casamento entre teoria e prática é crucial para o ensino equitativo, e são necessárias estratégias flexíveis e eficazes para garantir a inclusão. O objetivo deste artigo foi propor estratégias para a participação de alunos com deficiência nas aulas de educação física. Vinte e dois artigos com foco em estratégias de inclusão para a Educação Física foram revisados nas bases de dados SciELO, Google Scholar e Dialnet. Com base nos resultados obtidos, foram sistematizadas e elaboradas estratégias para melhorar a experiência de aprendizagem e promover a igualdade, incluindo aquelas adaptadas ao currículo e às atividades; treinamento e conscientização dos professores; e cultura inclusiva e ambiente positivo. Conclui-se que a inclusão educacional é um processo complexo que exige mudanças de atitudes, metodologias e políticas educacionais.

ABSTRACT Information and Communications Technologies (ICT), as a basic support for educational activities, have influenced the relationships between students, teachers, and the family itself, due to the ease of access to new knowledge, as well as the spread of alterations. psychological conditions that can trigger anxiety, irritation and stress behaviors. Cyberbullying or cyberharassment is an educational and social problem that negatively influences its victims. The objective was to analyze the effect of a program of socio-emotional strategies to reduce cyberbullying, in upper basic level students of an educational institution in Ecuador, during 2023. A mixed methodology with a quasi-experimental approach was used. The sample was intentional, made up of 69 8th year high school students between 10 and 12 years old. A control group and an experimental group to which a socio-emotional strategies program was applied were compared. The variables analyzed were: level of cyberbullying (electronic insults, impersonation and exclusion) and Socio-emotional strategies program. The pre-test and post-test analyze were contrasted with the non-parametric Mann Whitney U Test, after descriptive analysis. Statistically significant differences were found between the averages of the experimental group compared to the control group, with lower values in the levels of cyberbullying in the post-test in the three dimensions. The results obtained constitute a practical proposal with significant impact to reduce cyberbullying in high school students of a public institution in Ecuador.

RESUMEN Las Tecnologías de la Información y las Comunicaciones (TIC), como soporte básico para las actividades educativas, han influenciado en las relaciones entre alumnos, docentes, y la propia familia, por las facilidades de acceso a nuevos conocimientos, además por la propagación de alteraciones psicológicas que pueden desencadenar comportamientos de ansiedad, irritación y estrés. El ciberbullying o ciberacoso, es un problema educacional y social, que influye negativamente en sus víctimas. El objetivo fue analizar el efecto de un programa de estrategias socioemocionales para disminuir el ciberbullying, en los estudiantes de nivel básico superior de una institución educativa en Ecuador, durante 2023. Se utilizó una metodología mixta con enfoque cuasi experimental. La muestra fue intencional, compuesta por 69 estudiantes de 8vo año de básica superior con edades entre 10 y 12 años. Fue comparado un grupo de control y otro experimental al que se le aplicó un Programa de estrategias socioemocionales. Las variables analizadas fueron: nivel de ciberbullying (insultos electrónicos, suplantación y exclusión) y Programa de estrategias socioemocionales. Los análisis pre test y pos test, fueron contrastados con la Prueba no paramétrica U de Mann Whitney, previo análisis descriptivo. Se constataron diferencias estadísticamente significativas entre promedios del grupo experimental con respecto al de control, con valores más bajos en los niveles de ciberbullying en el pos test en las tres dimensiones. Los resultados obtenidos constituyen una propuesta práctica de impacto significativo para la disminución del ciberbullying en estudiantes de básica superior de una institución pública en Ecuador.

RESUMO As Tecnologias de Informação e Comunicação (TIC), como suporte básico das atividades educativas, têm influenciado as relações entre alunos, professores e a própria família, pela facilidade de acesso a novos conhecimentos, bem como pela propagação de alterações psicológicas. que podem desencadear comportamentos de ansiedade, irritação e estresse. O cyberbullying ou assédio cibernético é um problema educacional e social que influencia negativamente as suas vítimas. O objetivo foi analisar o efeito de um programa de estratégias socioemocionais para reduzir o cyberbullying, em estudantes de nível básico superior de uma instituição de ensino no Equador, durante 2023. Foi utilizada uma metodologia mista com uma abordagem quase experimental. A amostra foi intencional, composta por 69 alunos do 8º ano do ensino médio entre 10 e 12 anos. Foram comparados um grupo controle e um grupo experimental ao qual foi aplicado um programa de estratégias socioemocionais. As variáveis analisadas foram: nível de cyberbullying (insultos eletrônicos, falsificação de identidade e exclusão) e programa de estratégias socioemocionais. As análises pré-teste e pós-teste foram contrastadas com o Teste não paramétrico Mann Whitney U, após análise descritiva. Foram encontradas diferenças estatisticamente significativas entre as médias do grupo experimental em comparação ao grupo controle, com valores mais baixos nos níveis de cyberbullying no pós-teste nas três dimensões. Os resultados obtidos constituem uma proposta prática com impacto significativo para reduzir o cyberbullying em estudantes do ensino médio de uma instituição pública no Equador.

ABSTRACT This paper addresses the study of the bubble filter and web information. The main purpose was to analyze how the bubble filter, in its purpose of algorithmically managing content, can ensure the diversity of information sources for Internet users. For this purpose, a descriptive investigation was carried out with the scope of explanation and interpretation based on the systematic review of specialized literature in the Scopus, Web of Science, and SciE-LO databases, mainly. For the collection of information, the documentary review technique was chosen using the instrument of documentary analysis cards. It is concluded that the bubble filter impacts the right to information, as it affects the complete perception of reality and the understanding of the world. This is due to the delivery of information and the hiding of information that is managed by this algorithm, as it turns out to be a spiral of ideologies, tastes, preferences recorded and stored in the user's browsing, avoiding the knowledge of contrary or alternate positions. content users Scopus Science SciELO SciE LO databases mainly cards world algorithm ideologies tastes user s browsing positions

RESUMEN El presente trabajo aborda el estudio del filtro burbuja y la información web. El objetivo principal fue analizar cómo el filtro burbuja, en su propósito de gestionar algo-rítmicamente los contenidos, permite garantizar la diversidad de fuentes de información en los usuarios de Internet. Para dicho fin, se realizó una investigación descriptiva con alcance de explicación e interpretación basada en la revisión sistemática de la literatura especializada en las bases de datos Scopus, Web of Science y SciELO, principalmente. Para la recolección de información, se optó por la técnica de revisión documental utilizando el instrumento de fichas de análisis documental. Se concluye que el filtro burbuja impacta en el derecho a la información, pues afecta la percepción completa de la realidad y la comprensión del mundo. Ello obedece a que la entrega de la información y el ocultamiento de la información que es administrada por este algoritmo resultan ser una espiral de ideologías, gustos, preferencias registradas y almacenadas en las navegaciones del usuario, que evitan el conocimiento de posiciones contrarias o alternas. web algorítmicamente algo rítmicamente contenidos Internet fin Scopus SciELO principalmente mundo ideologías gustos usuario alternas

Abstract: Introduction: In patients with severe or critical COVID-19, the use of prednisone and musculoskeletal and respiratory rehabilitation has been described. The role of these interventions and the optimal time for their initiation are not clearly established. This study presents the results of the Rehabilitation Unit of the Banco de Seguro del Estado Hospital, which implemented a comprehensive rehabilitation program and the use of corticosteroids in the subacute stage of patients with severe or critical post-COVID-19, with a systematic approach, working interdisciplinary and centered on the person being treated. Findings at admission, oxygen requirement, Barthel scale, tomographic patterns, use of corticosteroids, their response, and complications are reported. The results of this approach on clinical, respiratory, and functional variables are described. Method: Descriptive, retrospective study of post-COVID-19 patients who completed rehabilitation at the Rehabilitation Unit of the Banco de Seguros del Estado Hospital (URHBSE) in the period April-August 2021. Data obtained from review of medical records, statistical analysis with PRISM (v8.2.1). Results: Eighty-four patients completed the rehabilitation program. Upon admission to the URHBSE, 55% had total or severe dependence on the Barthel scale. Forty-eight percent were unable to walk. Eighty-nine-point two percent required oxygen, with a mean saturation of 90.3 ± 4.8. Twenty-five percent of patients were admitted requiring a reservoir mask. All patients who entered the program were in the subacute phase of the disease (4 to 12 weeks) and received a comprehensive and individualized rehabilitation plan. The objective was to achieve a functional situation similar to what they had before COVID-19. The length of stay at the URHBSE was 23.5 ± 13.8 days. A total of 76 patients (90.5%) underwent high-resolution chest tomography (HRCT), which was pathological in 96.1% of cases. The predominant findings were ground-glass opacity in 49.3% of cases, consolidation in 8.23%, and a fibrosis-like pattern in 30.13%. “Non-typical” post-COVID damage tomographic alterations were detected (pleural effusion, cavitary nodules, apical cavities, etc.) in 11.8% of the tomographies. In 2 patients (2.6%), pulmonary aspergillosis was found, and in 6.6%, pulmonary thromboembolism. Forty-four patients (52.3%) received prednisone. In 63.4% of cases, oxygen supplementation was discontinued within the first 15 days from the start of prednisone. We found an association between the ground-glass opacity tomographic pattern and early discontinuation of oxygen supplementation from the start of prednisone (p = 0.047). Despite the high degree of colonization, we did not observe infections by colonizing microorganisms, even in those who used prednisone. Comparing admission and discharge, statistically significant differences were found in the following parameters: degree of dyspnea, oxygen requirement (only one patient was discharged with oxygen), saturation, degree of instrumentation (tracheostomy, nasogastric tube, etc.), and the Barthel dependency scale. Regarding respiratory variables, we only have data on the presence of dyspnea in the first 35 patients. Of these, 83% had dyspnea at admission, while only 17% had it at discharge (p < 0.0001). There were also significant differences in the oxygen requirement between admission and discharge (p < 0.0001) and in the degree of dependency measured on the Barthel scale. Fifty-five percent of patients had total or severe dependence at admission, compared to only 3.4% at discharge. Conclusions: The interventions carried out in the subacute stage of the disease were associated with significant improvements in clinical variables of interest. More studies are needed to define the role and the exact timing of the initiation of corticosteroids and rehabilitation in this group of patients.

resumen está disponible en el texto completo

Resumo: Introdução: O uso de prednisona e reabilitação musculoesquelética e respiratória foi descrito no tratamento de pacientes com COVID-19 grave ou crítico. O papel destas intervenções e o momento ideal para o seu início não estão claramente estabelecidos. Este trabalho mostra os resultados da Unidade de Reabilitação Hospitalar do Banco de Seguro del Estado que implementou um programa abrangente de reabilitação e uso de corticosteroides na fase subaguda de pacientes graves ou críticos pós-COVID-19, com uma abordagem sistematizada, trabalhando de forma interdisciplinar e centrada no paciente. São relatados os achados na admissão, a necessidade de oxigênio, a escala de Barthel, os padrões tomográficos, o uso de corticosteroides, a resposta ao tratamento e as complicações. Os resultados desta abordagem sobre variáveis clínicas, respiratórias e funcionais são descritos. Material e métodos: Estudo descritivo e retrospectivo de pacientes pós-COVID-19 que completaram reabilitação na Unidade de Reabilitação do Hospital Banco de Seguros del Estado (URHBSE) no período de abril a agosto de 2021. Os dados foram obtidos dos prontuários de pacientes com posterior análise estatísticas usando PRISM (v8.2.1). Resultados: 84 pacientes completaram o programa de reabilitação. No momento da admissão na URHBSE, 55% apresentavam dependência total ou grave da escala de Barthel. 48% não conseguiam se mover. 89,2% necessitaram oxigênio com saturação média de 90,3 ± 4,8. 25% dos pacientes foram internados necessitando máscara com reservatório. Todos os pacientes que ingressaram no programa estavam na fase subaguda da doença (4 a 12 semanas) e receberam um plano de reabilitação abrangente e individualizado. O objetivo era alcançar uma situação funcional semelhante à que apresentavam antes da COVID-19. O tempo de permanência na URHBSE foi de 23,5±13,8 dias. A tomografia de tórax de alta resolução (TCAR) foi realizada em 76 pacientes (90,5%); os resultados foram patológicos em 96,1%. O vidro fosco predominou em 49,3% deles, a consolidação em 8,23% e o padrão fibroso em 30,13%. Alterações tomográficas “atípicas” de danos pós-COVID (derrame pleural, nódulos cavitados, cavidades apicais, etc.) foram detectadas em 11,8% dos exames tomográficos. Aspergilose pulmonar foi encontrada em 2,6% dos pacientes e tromboembolismo pulmonar em 6,6%. 44 pacientes (52,3%) receberam prednisona. Em 63,4% a oferta de oxigênio foi suspensa nos primeiros 15 dias após o início da mesma. Encontramos associação entre o padrão tomográfico em vidro fosco e a suspensão precoce da oferta de oxigênio desde o início da administração da prednisona (p = 0,047). Apesar do alto grau de colonização, mesmo naqueles que usaram prednisona, não observamos infecções. Em relação às variáveis respiratórias, só temos dados sobre a presença de dispneia nos primeiros 35 pacientes; destes, 83% apresentavam dispneia na admissão, enquanto apenas 17% a apresentavam na alta (p< 0,0001). Observou-se também diferenças significativas na necessidade de O2 entre a admissão e a alta (p< 0,0001) e no grau de dependência medido pela escala de Barthel, com 55% dos pacientes apresentando dependência total ou grave na admissão e apenas 3,4% na alta. Conclusões: As intervenções realizadas na fase subaguda da doença foram associadas a melhorias significativas nas variáveis de interesse clínico. São necessários mais estudos para definir o papel e o momento exato do início dos corticosteroides e da reabilitação neste grupo de pacientes.

Abstract This study aimed to evaluate the effect of Se administered through intraruminal boluses in goat kids and correlate it with the levels of the mineral and the biomarkers of oxidative stress in the blood. Fifteen goat kids of 8 to 9 wk of age of the Alpine breed with an average weight of 13.7 kg were used and divided into three groups: Selenium group (a sodium selenite bolus was administered orally, with an equivalent content of 90 mg of Se); Se-SMZ group (a bolus of sodium selenite was administered orally, with a content equivalent to 90 mg of Se and 4 g of sulfamethazine a); Placebo group (a placebo bolus was administered orally). Plasma Se levels were carried out through the technique of atomic absorption spectrophotometry. The concentration of TBARS and GSH were estimated through spectrophotometry. The established significance was P<0.05. After the administration of the selenium and SE- SMZ Se boluses, the goat kids increased the levels of Se in plasma starting 3 h after dosing, with a significant difference (P<0.05) between the Se vs Se-SMZ until 3 and 24 h. The groups of bolus-dosed animals had variability in plasma TBARS levels without showing a constant trend (P>0.05). GSH levels did not show significant differences between the groups. In conclusion, the boluses with Selenium and Se-SMZ increased plasma Se levels. There was wide variability in plasma TBARS levels and GSH levels did not show relevant significant differences between treatments. Boluses were a good alternative to supplement Se to ruminants.

Resumen Este estudio tuvo como objetivo evaluar el efecto de Se administrado a través de bolos intrarruminales en cabritos y correlacionarlo con los niveles del mineral y los biomarcadores de estrés oxidativo en sangre. Se utilizaron 15 cabritos de 8 a 9 semanas de edad de la raza Alpina con un peso promedio de 13.7 kg y se dividieron en tres grupos: grupo Selenio (se administró un bolo de selenito de sodio por vía oral, con un contenido equivalente a 90 mg de Se); grupo Se-SMZ (se administró un bolo de selenito de sodio vía oral, con un contenido equivalente a 90 mg de Se y 4 g de sulfametazina a); grupo Placebo (se administró un bolo placebo vía oral). Los niveles plasmáticos de Se se llevaron a cabo mediante la técnica de espectrofotometría de absorción atómica. La concentración de TBARS y GSH se estimó mediante espectrofotometría. La significancia establecida fue de P<0.05. Después de la administración de los bolos de selenio y Se-SMZ, los cabritos aumentaron los niveles de Se en plasma a partir de las 3 h después de la dosificación, con una diferencia significativa (P<0.05) entre el Se vs Se-SMZ hasta las 3 y 24 h. Los grupos de animales a los que se les administró el bolo presentaron variabilidad en los niveles plasmáticos de TBARS sin mostrar una tendencia constante (P>0.05). Los niveles de GSH no mostraron diferencias significativas entre los grupos. En conclusión, los bolos con Selenio y Se-SMZ aumentaron los niveles plasmáticos de Se. Hubo una amplia variabilidad en los niveles plasmáticos de TBARS y los niveles de GSH no mostraron diferencias significativas relevantes entre los tratamientos. Los bolos fueron una buena alternativa para suplementar el Se a los rumiantes.

ABSTRACT The teachers of the pedagogical schools of the Primary Teacher specialty that teach the subjects of the Private Didactics, need to be systematically prepared to develop the pedagogical professional ability to direct the educational process in general and the teaching-learning process in particular, for which they conceive the practice work of each year in a logical, systemic sequence and as an interdisciplinary node. The preparation is part of the Technical Council to nine teachers responsible for subjects. Given the insufficient didactic training that they have, because they come from different plans and modalities of degree, the graduated objectives are promoted from the first to the fourth year of the specialty. The content is systematized with the use of theoretical level methods. It is the purpose of this article to offer the considerations that support the definition of continuous didactic training, its requirements, the conception of the work practice of students of pedagogical schools as an interdisciplinary node and the potential of methodological work through the Technical Council and class visits to teachers of the pedagogical schools of the Primary Teacher specialty.

RESUMEN Los docentes de las escuelas pedagógicas de la especialidad Maestro Primario que imparten las asignaturas de las Didácticas Particulares, necesitan prepararse sistemáticamente para desarrollar la habilidad profesional pedagógica dirigir el proceso educativo en general y el de enseñanza-aprendizaje en particular, por lo que conciben la práctica laboral de cada año en una secuencia lógica, sistémica y como nodo interdisciplinario. La preparación se enmarca en el Consejo Técnico a nueve docentes responsables de asignaturas. Dada la insuficiente formación didáctica que poseen, porque proceden de diversos planes y modalidades de titulación, se potencian los objetivos gradados desde el primer al cuarto año de la especialidad. El contenido se sistematiza con el empleo de métodos del nivel teórico. Es propósito de este artículo ofrecer las consideraciones que sustentan la definición de formación didáctica continua, los requerimientos de la misma, la concepción de la práctica laboral de los estudiantes de las escuelas pedagógicas como nodo interdisciplinario y las potencialidades del trabajo metodológico a través del Consejo Técnico y las visitas a clases a los docentes de las escuelas pedagógicas de la especialidad Maestro Primario.

ABSTRACT In the present study, the results of the implementation of Blended Learning are reported, taking as a basis for design the Community of Inquiry (CoI) model, which is a constructivist model for designing educational experiences. A course was designed in the Blended Learning format for a subject at the Universidad Autónoma de Tamaulipas. Through a quasi-experiment with a single group using pretest-posttest, the Community of Inquiry scale was administered to assess students' perception of cognitive presence. The results reveal a positive impact of the intervention based on the CoI model, specifically in relation to triggering event, exploration, integration, and resolution of cognitive presence. This implies that the use of the theoretical foundations of the Community of Inquiry model serves as a useful reference for the successful implementation and positive perception of Blended Learning.

RESUMEN En el presente trabajo se dan a conocer los resultados de la implementación del Blended Learning tomando como base para el diseño, el modelo de Comunidad de Indagación (CoI), que es un modelo constructivista para el diseño de experiencias educativas. Se estructuró un curso en el formato Blended Learning para una asignatura en la Universidad Autónoma de Tamaulipas. A través de un cuasiexperimento de un solo grupo mediante pretest postest en el que se aplicó la escala de Comunidad de Indagación para evaluar la percepción de los estudiantes respecto a la presencia cognitiva, los resultados revelan un impacto positivo de la intervención bajo del modelo CoI, en relación con el evento desencadenante, exploración, integración y resolución de la presencia cognitiva, lo que implica que la utilización de los fundamentos teóricos del modelo de Comunidad de Indagación son un referente de utilidad para la implementación exitosa y percepción positiva del Blended Learning.

ABSTRACT BACKGROUND: Ankle taping (AT) is effective in preventing ankle sprain injuries in most common sports and is employed in rehabilitation and prevention sports. OBJECTIVE: This study aimed to investigate the effectiveness of AT to restricting excessive frontal plane ankle movements in semi-professional basketball players throughout the training session. DESIGN AND SETTING: A cross-sectional study was performed at the Universidad Europea de Madrid. METHODS: Forty male and female semi-professional basketball players were divided into two groups. The ankle dorsiflexion range of motion (ROM) and interlimb asymmetries in a weight-bearing lunge position were evaluated at four time points: 1) with no tape, 2) before practice, at 30 min of practice, and 3) immediately after practice. RESULTS: In male basketball players, no differences were observed in the right and left ankles between the baseline and 30 min and between baseline and 90 min of assessment. In female athletes, significant differences were reported between baseline and pre-training assessments for the right ankle and also significant differences between baseline and 90 min in both ankles. CONCLUSIONS: Ankle taping effectively decreased the ankle dorsiflexion ROM in male and female basketball players immediately after application. However, ROM restriction was very low after 30 and 90 min, as assessed in a single basketball practice. Therefore, the classic taping method should be revised to develop new prophylactic approaches, such as the implementation of semi-rigid bracing techniques or the addition of active stripes during training or game pauses.

Abstract Herbaceous plants are important elements in coffee plantations of any producing region, coexisting in different degrees with coffee and woody plants. The objective of this study was to identify the principal herbaceous species present within one of the main coffee-producing strips in the state, analyzing seven coffee regions sampling 27 sites. 167 morphotypes were identified of which 148 were taxonomically determined to species level belonging to 52 botanical families. The families Asteraceae and Poaceae were the richest families with 20 and 21 species respectively; followed by Convolvulaceae and Fabaceae with 7 species each; and Euphorbiaceae, Lamiaceae and Solanaceae with six species each; the first two families have about the half of all individuals registered in the entire work. The families with the highest IVI were: Commelinaceae, Asteraceae, Poaceae, Acanthaceae, Crassulaceae; and the species with the highest IVI were: Bidens pilosa, Commelina coelestis, Melampodium divaricatum, Pseudechinolaena polystachya and Commelina erecta, respectively. The results showed that some variables such as altitude and precipitation have a significant influence on the diversity of weed species throughout the central zone of the state of Veracruz.

Resumen Las arvenses son elementos importantes dentro de los cafetales de cualquier región productora, coexistiendo en diferentes grados con el cafeto y especies leñosas asociadas. El objetivo fue identificar las especies de arvenses presentes "en la principal zona productora de café en el estado de Veracruz, analizando siete regiones cafetaleras muestreando 27 sitios. Se registraron 167 morfotipos de arvenses, de las cuales se determinaron taxonómicamente 148 hasta nivel de especie pertenecientes a 52 familias botánicas. Las familias Asteraceae y Poaceae fueron las más ricas en especies con 20 y 21 respectivamente, seguidas de Lamiaceae con 8 especies, Convolvulaceae y Fabaceae cada una con 7 especies, Euphorbiaceae, Malvaceae y Solanaceae con seis especies cada una; las dos primeras familias acumulan alrededor de la mitad de los individuos registrados en todo el trabajo. Las familias con los valores más altos del Índice de Valor de Importancia (IVI) fueron: Commelinaceae, Asteraceae, Poaceae, Acanthaceae, Crassulaceae; las especies con mayor IVI fueron: Bidens pilosa, Commelina coelestis, Melampodium divaricatum, Pseudechinolaena polystachya y Commelina erecta. Se logró identificar que variables como la altitud y precipitación tienen una influencia significativa sobre la diversidad de especies de arvenses a lo largo de la zona centro del estado de Veracruz.

Abstract Ovine pulmonary adenocarcinoma is a transmissible pulmonary malignancy of sheep caused by a beta-retrovirus currently named Jaagsiekte sheep retrovirus (JSRV). Club cells (formerly Clara cells) in the bronchiole and type II pneumonocytes in the alveoli are the target oncogenic cells for this virus. Characterized clinically by intermittent cough, abundant nasal discharge, and progressive weight loss, the tumors randomly involve all lung lobes or have a cranioventral distribution mimicking bronchopneumonia. The definitive diagnosis of ovine pulmonary adenocarcinoma requires identifying Jaagsiekte sheep retrovirus or associated specific proteins in neoplastic cells such as JSRV-Env oncogenic protein. A two-year-old Male Pelibuey sheep with a history of chronic cough and progressive weight loss was treated unsuccessfully with antibiotics and died a few days later. Postmortem examination revealed lung edema and several nodular to locally extensive masses in the lungs. Microscopically the tumoral tissues were composed of clusters of neoplastic epithelial cells exhibiting a lepidic growth pattern typical of pulmonary carcinoma. Tumoral cells were immunopositive for Jaagsiekte sheep retrovirus-Env oncogenic protein. Based on these findings, the final diagnosis of ovine pulmonary adenocarcinoma was made.

Resumen El adenocarcinoma pulmonar ovino es una neoplasia pulmonar transmisible del ganado ovino causada por un beta retrovirus actualmente denominado retrovirus Jaagsiekte de las ovejas (JSRV). Las células Club (anteriormente llamadas células de Clara) de los bronquiolos y los neumocitos de tipo II de los alvéolos son las células oncogénicas que constituyen el objetivo de este virus. Se caracteriza clínicamente por tos intermitente, secreción nasal abundante y pérdida de peso progresiva, los tumores afectan aleatoriamente a todos los lóbulos pulmonares o tienen una distribución cráneo-ventral que simula una bronconeumonía. El diagnóstico definitivo del adenocarcinoma pulmonar ovino requiere que se identifique el retrovirus Jaagsiekte de las ovejas RVJO-Env, o bien, la presencia de proteínas específicas asociadas en las células neoplásicas, tales como la proteína oncogénica JSRV-Env. Un ovino Pelibuey macho de dos años con un historial de tos crónica y pérdida de peso progresiva fue tratado sin éxito con antibióticos y murió unos días más tarde. El examen post mortem reveló edema pulmonar y varias masas nodulares localmente extensas en los pulmones. A nivel microscópico, los tejidos tumorales estaban compuestos por grupos de células epiteliales neoplásicas que mostraban un patrón de crecimiento lepídico típico del carcinoma pulmonar. Las células tumorales fueron inmunopositivas para la proteína oncogénica Env del retrovirus Jaagsiekte de la oveja. Con base en estos hallazgos, se hizo el diagnóstico final de adenocarcinoma pulmonar ovino.

Summary: The study of cashew (Anacardium occidentale L.) response to salt stress from physiological indicators in genotypes contributes to the knowledge of the adaptive mechanisms of this species to stressful conditions. The objective of our research was to analyze the phenotypic plasticity and variation in indicators related to photosynthesis in two genotypes (red and yellow) of Anacardium occidentale L., during the seedling stage under greenhouse conditions. The effect of five salinity levels (0.02 dS m-1, 5 dS m-1, 10 dS m-1, 15 dS m-1 and 20 dS m-1) on characters associated with photosynthesis, gas exchange and chlorophyll fluorescence was evaluated. Phenotypic plasticity in response to salt stress was calculated for the indicators evaluated through the phenotypic plasticity index. The red variety showed the greatest effects of salt stress on photosynthetic rate, transpiration, sub-stomatal CO2, Fm, Fv, Fv/Fm, Fv/Fo, and Pi abs. The significant differences found in phenotypic plasticity showed higher values in the red variety in most of the indicators evaluated. A negative effect of salinity at the seedling stage on indicators related to photosynthesis, gas exchange, and chlorophyll fluorescence was detected, as well as significant differences between genotypes according to the indicators evaluated and the levels of phenotypic plasticity. Photosynthesis and stomatal conductance were the indicators that showed the highest values of phenotypic plasticity.

Resumen: El estudio de la respuesta al estrés salino a partir de indicadores fisiológicos en genotipos de marañón (Anacardium occidentale L.), contribuye al conocimiento de los mecanismos adaptativos de esta especie a condiciones estresantes. El objetivo de esta investigación fue analizar la plasticidad fenotípica y la variación en indicadores relacionados con la fotosíntesis en dos genotipos (rojo y amarillo) de Anacardium occidentale L., durante la fase de plántulas en condiciones de invernadero. Se evaluó el efecto de cinco niveles de salinidad (0.02 dS m-1, 5 dS m-1, 10 dS m-1, 15 dS m-1 y 20 dS m-1) sobre caracteres asociados a la fotosíntesis, intercambio gaseoso y la fluorescencia de la clorofila. Se calculó la plasticidad fenotípica en respuesta al estrés salino de los indicadores evaluados a través del índice de plasticidad fenotípica. La variedad roja mostró las mayores afectaciones producto del estrés salino en los indicadores tasa fotosintética, transpiración, CO2 subestomático, Fm, Fv, Fv/Fm, Fv/Fo y Pi abs. Las diferencias significativas encontradas en cuanto a la plasticidad fenotípica mostraron valores superiores en la variedad roja en la mayoría de los indicadores evaluados. Se muestra el efecto negativo que tiene la salinidad en el estadio de plántulas en los indicadores relacionados con la fotosíntesis, intercambio gaseoso, y fluorescencia de la clorofila, así como las diferencias significativas existentes en cuanto a los indicadores evaluados y los niveles de plasticidad fenotípica de los mismos entre genotipos. La fotosíntesis y la conductancia estomática fueron los indicadores que mostraron los mayores valores de plasticidad fenotípica.

Summary: The study of the dynamic processes of the change of land use and vegetation is essential given the trends in the degradation processes of ecosystems. The Juluapan basin exhibits processes of change of land use and vegetation for more than 50 years, therefore, the objective of our study was to analyze the changes in land and vegetation use over time for the periods 1971 to 2010 and 2010 to 2018, with aerial and satellite images using Geographic Information Systems (GIS). The results obtained for the period of 1971-2010 show the loss of 752 hectares of shrub vegetation that represents 13.3% of the total area. For the 2010-2018 period, a loss of 202 hectares was estimated, with a deforested area of 3.6%. The exchange rate for tree vegetation of the 1971-2010 period was defined with -1.47% and for the 2010-2018 period with a -2.03%. The scenarios of change of land use and vegetation presented in this study will allow the development of actions in favor of soil resource planning related to land use ordinance at the local level, as well as the execution of programs that reduce the impact on natural resources and promote the rational use of ecosystems in this region.

Resumen: El estudio del proceso dinámico de cambio de uso de suelo y vegetación se considera esencial dadas las tendencias de los procesos de degradación de los ecosistemas. La cuenca Juluapan presenta procesos de cambio de uso de suelo y vegetación desde hace más de 50 años, por lo que el objetivo de la investigación es analizar el cambio de uso de suelo y vegetación a través del tiempo para los periodos 1971 a 2010 y 2010 a 2018, utilizando imágenes aéreas y de satélite, usando los Sistemas de Información Geográfica (SIG). Los resultados obtenidos para periodo de 1971-2010, manifiestan la pérdida de 752 hectáreas de vegetación arbustiva que representa 13.3% de la superficie total. Para el periodo 2010-2018, se estimó una pérdida de 202 hectáreas, con una superficie deforestada del 3.6%. La tasa de cambio para la vegetación arbórea del periodo de 1971-2010 se definió con un -1.47% y para el periodo 2010-2018 con una tasa de cambio -2.03%. Los escenarios de cambio en la cubierta vegetal y uso del suelo presentados en este estudio permitirán el desarrollo de acciones en favor de la planificación del recurso suelo, vinculadas con el ordenamiento del territorio a escala local y la ejecución de programas que aminoren el impacto hacia los recursos naturales y favorezcan el uso racional de los ecosistemas en esta región.

RESUMEN El presente trabajo tiene la finalidad de dar a conocer el desarrollo de un prototipo de sensor para la medición de mercurio (Hg2+) en solución acuosa sobre una plataforma electroquímica basada en electrodos serigrafiados de nanotubos de carbonos (CNT-SPE) en conjunto con nanopartículas de oro (NPs-Au) realizadas a través de síntesis verde, utilizando extracto acuoso de Sargassum spp. Para esto, se realizó la caracterización de las NPs-Au por espectroscopía ultravioleta-visible (UV-Vis), infrarrojo (TF-IR), difracción de rayos X (DRX) y microscopía electrónica de barrido (SEM); obteniendo nanopartículas entre 80-100 nm las cuales poseen un recubrimiento orgánico que les confiere una sinergia al momento de ser conjugadas con CNT-SPE oxidadas/activadas. Posteriormente, las NPs-Au se utilizaron para modificar el CNT-SPE a través del método drop-casting y así ensamblar un novedoso sensor electroquímico para la medición de Hg2+, cuya validación y habilidad para medir fue demostrada utilizando voltametría diferencial de pulso (DPV). Se obtuvieron límites de detección de 2.38 𝜇M y cuantificación de 3 𝜇M. Los resultados demuestran que la plataforma desarrollada es una alternativa, rápida, eficiente y portátil para la medición de Hg2+.

ABSTRACT The present manuscript’s objective is to develop a sensor prototype for measuring mercury (Hg2+) in an aqueous solution. An electrochemical platform based on screen-printed carbon nanotube electrodes (CNT-SPE) and gold nanoparticles (NPs-Au) synthesized using a green synthesis method with an aqueous extract of Sargassum spp. For this, the characterization of the NPs-Au was carried out by ultraviolet-visible (UV-Vis), infrared (TF-IR), X-ray diffraction (XRD) and scanning electron microscopy (SEM) spectroscopy. The nanoparticles have sizes between 80-100 nm and an organic coating that allows them a synergy when conjugated with oxidized/activated CNT-SPE. Subsequently, the NPs-Au were used to modify the CNT-SPE through the drop-casting method and thus assemble a novel electrochemical sensor for the measurement of Hg2+, whose validation and ability to measure was demonstrated using differential pulse voltammetry (DPV). Detection limits of 2.38 𝜇M and quantification of 3 𝜇M were obtained. The results show that the developed platform is a fast, efficient and portable alternative for the measurement of Hg2+.