1,453 research outputs found

    Estrategias lúdicas para la prevención del pandillismo en la institución educativa Fulgencio Lequerica Vélez, sede puntilla, Cartagena de Indias

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    Para la implementación del proyecto de intervención pedagógica estrategias lúdicas para la prevención del pandillismo en la institución educativa Fulgencio Lequerica Vélez, Sede Puntilla, se realizaron cinco talleres lúdicos, dirigidos a estudiantes, padres de familia y docentes, con los cuales se logró que se empoderaran de varios elementos conceptuales asociados a la situación del fenómeno social del pandillismo, sus características, consecuencias, pero en especial la apropiación de aspectos que permitan prevenir la vinculación de los jóvenes a este tipo de actividad; igualmente que tipo acciones realizar para intervenir cuando se presenta este fenómeno

    Weber approach for retromolar adenoid cyst carcinoma: case report and literature review

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    Adenoid cyst carcinoma (ACC) is an uncommon facial tumor and challenging to treat; surgical treatment is challenging due to its localization. A 49-year-old Latin female patient with a one-year history of soft tissue-depending mass of slow growth in the right maxillary region. Laboratory tests reported normal. Contrast-enhanced computed tomography showed a maxillary tumor. Patient underwent to surgical resection by Weber-Fergusson approach. The patient received postoperative adjuvant radiotherapy. ACC is a challenging entity to treat, surgical resection, and radiotherapy is required. The combination of surgery and radiotherapy represents the definitive treatment for ACC. Chemotherapy remains controversial and is reserved for palliation in selected cases.

    Effects of (learning) plan through block practice in the inner-edge-of-the-foot-strike soccer technique on the acquisition (learning) in children between 10 and 12 years old

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    ABSTRACT: In this paper were analyzed the effects of a training (learning) plan through block practice in the inner-edge-of-the-foot-strike soccer techniques on the acquisition (learning) of these technical fundament. The research was conducted with a sample of nine children between 10 and 12 years of age belonging to a soccer club. The study was conducted with one experimental group, randomly formed, who conducted a pre-test - postest. To make the assessment, it was previously designed and structured measurement instrument of learning and it were used film records for each subject. For data processing were used central tendency, dispersion and inference measures. Results show that after the implementation of a plan of technical learning (1.000 repetitions of technical fundament) statistically significant differences in learning for technical fundament were presented.RESUMEN: En el presente trabajo se analizaron los efectos de un plan de entrenamiento (aprendizaje) mediante la práctica por bloques en el golpeo con la parte interna del pie en la adquisición (aprendizaje) de este fundamento técnico. La investigación fue realizada con una muestra de nueve niños entre 10 y 12 años de edad pertenecientes a un club de fútbol. El estudio se llevó a cabo con un grupo experimental conformado aleatoriamente, con el que se realizó un pretest- postest. Para efectuar la valoración se diseñó y estructuró previamente el instrumento de medición del aprendizaje de la técnica y se utilizaron registros fílmicos de cada sujeto. Para el tratamiento de la información se emplearon las medidas de tendencia central, de dispersión y de inferencia. Los resultados muestran que después de la ejecución de un plan de aprendizaje técnico (1.000 repeticiones del fundamento técnico) se presentan diferencias estadísticamente significativas en el aprendizaje del golpeo con la parte interna del pie

    Avaliação das aprendizagens e Feedback: uma experiência investigativa em sala de aula remota

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    In this manuscript, we report an exploratory study built in the context of an institutional program for initial teacher training at Universidade Federal Fluminense. Considering the context of the Covid-19 pandemic, in which schooling was made possible by the contingency of remote learning, we performed a didactic sequence performed in 4 moments (3 synchronous and 1 asynchronous), which explored the concepts of area and perimeter with 25 students from the 6th year of elementary school. The study methodology was based on the qualitative perspective of exploratory studies in which we aimed to investigate the effects of feedback on student learning. We base the theoretical perspective of the investigation according to the conceptions of formative assessment discussed in the current and established literature in the field. In the analysis of the answers found, we realized that the formative feedback inserted in the presented evaluations worked to establish a positive dialogue between teachers and students, it collaborated to deconstruct the outdated idea of "error" as a subjective factor inherent to students in the learning process and it elevated the self-esteem of students who thought they were incapable of mathematical subjects.En este manuscrito, reportamos un estudio exploratorio construido en el contexto de un programa institucional de formación inicial docente en la Universidade Federal Fluminense. Teniendo en cuenta el contexto de la pandemia Covid-19, en el que la escolarización fue posible por la contingencia del aprendizaje remoto, realizamos una secuencia didáctica realizada en 4 momentos (3 sincrónicos y 1 asincrónico), que exploró los conceptos de área y perímetro con 25 alumnos de 6º año de primaria. La metodología de estudio se basó en la perspectiva cualitativa de estudios exploratorios en los que se pretendía investigar los efectos de la retroalimentación en el aprendizaje de los estudiantes. Basamos la perspectiva teórica de la investigación de acuerdo con las concepciones de evaluación formativa discutidas en la literatura actual y establecida en el campo. En el análisis de las respuestas encontradas, nos dimos cuenta de que la retroalimentación formativa insertada en las evaluaciones presentadas funcionó para establecer un diálogo positivo entre docentes y alumnos, colaboró para deconstruir la anticuada idea de "error" como factor subjetivo inherente a los estudiantes. en el proceso de aprendizaje y elevó la autoestima de los estudiantes que se creían incapaces de materias matemáticas.Neste manuscrito, relatamos um estudo exploratório construído no contexto de um programa institucional de formação inicial docente da Universidade Federal Fluminense. Considerando o contexto da pandemia de Covid-19, em que a escolarização foi possibilitada pela contingência do ensino remoto, elaboramos uma sequência didática realizada em 4 momentos (3 síncronos e 1 assíncrono), que explorou os conceitos de área e perímetro com 25 estudantes do 6º ano do ensino fundamental. A metodologia do estudo baseou-se na perspectiva qualitativa dos estudos exploratórios em que objetivamos investigar os efeitos do feedback nas aprendizagens dos estudantes. A   perspectiva teórica foi fundamentada na investigação segundo as concepções de avaliação formativa que a literatura atual e consagrada no campo vem discutido. Nas análises das respostas encontradas, percebemos que o feedback inserido nas avaliações apresentadas funcionou para estabelecer um diálogo positivo entre os professores e os alunos, colaborou para desconstruir a ideia ultrapassada de “erro” como fator subjetivo inerente aos alunos no processo de aprendizagem e elevou a autoestima de alunos que se julgavam incapazes diante de assuntos matemáticos

    Produtividade de Pinus caribaea VAR. hondurensis e suas relações com atributos químicos dos solos em região de Cerrado brasileiro

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    Forestry with exotic species plays an important socioeconomic role in Brazil, providing raw material for the production of wood, frewood, charcoal, cellulose, among others. In this sense, it becomes necessary to deepen the knowledge about the environmental variables that control the productivity of Pinus, especially the edaphic ones. The objective of the present work was to evaluate the spatial variability of soil and plant chemical attributes in a commercial plantation of Pinus caribaea var. Hondurensis. The experiment was installed on the campus of the Faculty of Engineering of Ilha Solteira (Unesp), located in Selvíria, state of Mato Grosso do Sul, Brazil, in a RED OXYSOL Dystroferric, very clayey texture. The following soil chemical attributes were analyzed: phosphorus (P), organic matter (OM), hydrogen ionic potential (pH), potassium (K), calcium (Ca), magnesium (Mg), potential acidity (C), base saturation (V%), calcium (CaT), magnesium (MgT) and aluminum (m) in CEC (Cationic Exchange Capacity). All soil and plant attributes presented simple spatial dependence in the studied area, except for height, diameter at breast height and potential acidity in the 0.10-0.20 m layer, evidencing that Pinus management can be performed according to the specifc site in the conditions of the study. Potassium was the soil attribute that best correlated with the productivity of Pinus in volume, as well as the best indicators for the estimation of productivity.A silvicultura com espécies exóticas desempenha importante papel socioeconômico no Brasil, fornecendo matéria-prima para a produção de madeira, lenha, carvão e celulose, dentre outros. Nesse sentido, torna-se necessária o aprofundamento do conhecimento sobre as variáveis ambientais que controlam a produtividade do Pinus, em especial, as edáficas. O objetivo do presente trabalho foi avaliar a variabilidade espacial dos atributos químicos de solo e planta em um plantio comercial de Pinus caribaea var. hondurensis. O experimento foi instalado no campus da Faculdade de Engenharia de Ilha Solteira (Unesp), localizado em Selvíria, Estado de Mato Grosso do Sul, Brasil, em um LATOSSOLO VERMELHO Distroférrico, textura muito argilosa. Foram analisados os seguintes atributos químicos do solo: fósforo (P), matéria orgânica (MO), potencial hidrogeniônico (pH), potássio (K), cálcio (Ca), magnésio (Mg), acidez potencial (H+Al), alumínio (Al), soma de bases (SB), capacidade de troca catiônica (CTC), saturação por bases (V%) e, cálcio (CaT), magnésio (MgT) e alumínio (m) na CTC. Pode-se estimar os atributos químicos da camada de 0,10-0,20 m através dos atributos da camada superficial (93%), não sendo, portanto, necessária à coleta dos atributos subsuperficias, representando oportunidades de economia em analises e de coleta de solos para futuros trabalhos. Todos os atributos de solo e planta apresentaram dependência espacial simples na área do estudo, exceto, altura, diâmetro a altura do peito e acidez potencial na camada de 0,10-0,20 m, evidenciando que o manejo de Pinus pode ser realizado de acordo com site especifico nas condições do estudo. O potássio foi o atributo de solo que apresentou cokrigagem com a produtividade de Pinus, bem como os melhores indicadores para a estimativa da produtividade

    Analyses of the genetic polymorphisms rs3740199 and rs1871054 of the ADAM12 gene and the alleles at the rs2073508 loci of the TGFB1 gene and their contribution to susceptibility to primary knee osteoarthritis

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    [Abstract] Aims: To analyze the association of polymorphisms in the ADAM12 (rs3740199 and rs1871054) and TGFB1 (rs2073508) genes with knee osteoarthritis (KOA) in a population from northern Mexico. Methods: A total of 296 individuals were included in the study. Primary KOA was confirmed according to the criteria established by the American College of Rheumatology. A real-time PCR-based DNA genotyping method was used to evaluate the rs3740199, rs1871054, and rs2073508 polymorphisms in 132 cases and 164 controls. Results: Our results demonstrate that the ADAM12 rs3740199 polymorphism was significantly associated with primary KOA under the recessive model (p = 0.036). However, after performing a multinomial logistic regression model, no significant association was found (p = 0.722). Furthermore, no associations for the rs1871054 and rs2073508 polymorphisms were observed in this study. Conclusion: These findings suggest that polymorphisms within the ADAM12 and TGFB1 genes may not have a significant influence on primary KOA susceptibility in the Mexican Mestizo population; however, inclusion of other ethnic groups and a larger sample size are needed to more fully analyze the role of these polymorphisms with KOA risk.This study was funded by the Faculty of Medicine at the Autonomous University of Coahuila in Torreon, Mexico (PFCE-2018).Universidad Autónoma de Coahuila (México); PFCE-201

    Suscetibilidade magnética na identificação de áreas para aplicação de vinhaça

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    The objective of this work was to evaluate the magnetic susceptibility efficiency for estimating the support capacity of areas for vinasse application. Two hundred forty‑one soil samples were collected from a 380‑ha area, on which soil chemical properties, clay content, and magnetic susceptibility were determined. Vinasse requirement was calculated for each sample. Data were subjected to descriptive statistical analysis, and regression models were developed between magnetic susceptibility and the other evaluated attributes. The analysis of data spatial dependence was performed using geostatistics. Kriging maps and cross variograms were built in order to investigate the spatial correlation between soil magnetic susceptibility and studied attributes. Based on the map of vinasse requirement, on the soil classes, and on the kriging map, calculations were done for average vinasse dose and average soil support capacity, weighted by the area. Magnetic susceptibility has significant linear spatial correlation with recommended vinasse doses and soil support capacity for the application of this effluent, and it can be used as a pedotransfer function for indirect quantification of soil support capacity.O objetivo deste trabalho foi avaliar a eficiência da suscetibilidade magnética do solo para estimar a capacidade de suporte de áreas à aplicação de vinhaça. Foram coletadas 241 amostras de solo, de uma área de 380 ha, nas quais foram determinados os atributos químicos, os teores de argila e a suscetibilidade magnética do solo. Foram calculadas as doses de vinhaça recomendadas para cada amostra. Os dados foram submetidos à análise estatística descritiva, e foram desenvolvidos modelos de regressão entre a suscetibilidade magnética e os outros atributos avaliados. A análise da dependência espacial dos dados foi feita com uso da geoestatística. Foram construídos mapas de krigagem e variogramas cruzados, para averiguar a correlação espacial entre a suscetibilidade magnética e os atributos estudados. Com base no mapa de recomendação de vinhaça, nas classes de solo e nos mapas de krigagem, foram calculadas as doses médias de vinhaça e as capacidades de suporte médias, ponderadas pela área. A suscetibilidade magnética apresenta correlação espacial linear significativa com as doses de vinhaça recomendadas e com a capacidade de suporte do solo à aplicação desse efluente, e pode ser utilizada como componente da função de pedotransferência, na quantificação indireta da capacidade de suporte

    Planta para la producción de caprolactama

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    El proyecto realizado consiste en la producción de Caprolactama mediante los procesos de amoximación y transposición de Beckmann. El proceso de amoximación consiste en la oximación catalítica de la ciclohexanona, mediante un catalizador de zeolitas, TS1. En la transposición de Beckmann, la ciclohexanona oxima, formada en la amoximación, reacciona con ácido sulfúrico para producir la Caprolactama, al neutralizar el corriente de proceso con amoníaco. Para realizar estos procesos en la planta de Caprolactama, se requiere un reactor catalítico para la amoximación y cuatro reactores para la transposición de Beckmann. Junto a la Caprolactama, en esta planta, se obtiene un subproducto, el sulfato de amonio. También serán necesarias ocho columnas para las separaciones, dos para las extracciones y seis para las destilaciones. Además, se requiere de dos cristalizadores para la obtención del sulfato amónico. Debido a la naturaleza de los compuestos manipulados, es necesario tomar ciertas medidas de seguridad especiales en toda la planta, especialmente para la purificación de la Caprolactama, que utiliza benceno, un disolvente orgánico cancerígeno e inflamable. Este proceso utiliza un sistema de control muy preciso, debido a la complejidad de las reacciones. En el proceso se intenta optimizar tanto el consumo de recursos (reutilización de los disolventes, el tolueno y el benceno) como el consumo energético (aprovechamiento de flujos calientes para precalentar otros fríos, generación de vapor en el reactor y a lo largo del proceso con corrientes que requieren de enfriamiento de caudales elevados a altas temperaturas). A pesar de esto, no se consiguen beneficios económicos, considerándolo así económicamente inviable. Este ha sido el resultado del estudio del flujo de caja de cada año que siempre ha resultado negativo debido a los elevados costes de producción. Todo y que se pueden realizar mejoras en el proceso, el precio de los reactivos y los productos son tan parecidos que estas mejoras no garantizan beneficios para la planta: (1) Utilizar una materia prima de menor coste, como el benceno; (2) Optimizar el proceso incrementando el precio del inmovilizado para disminuir el coste de la producción; (3) Usar otros procesos de producción parecidos o modificar algunos parámetros de los procesos utilizados, por ejemplo, realizar el proceso del Beckmann en fase gas

    Perceived Diet Quality, Eating Behaviour, and Lifestyle Changes in a Mexican Population with Internet Access during Confinement for the COVID-19 Pandemic: ESCAN-COVID19Mx Survey

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    Perceived changes in diet quality, emotional eating, physical activity, and lifestyle were evaluated in a group of Mexican adults before and during COVID-19 confinement. In this study, 8289 adults answered an online questionnaire between April and May 2020. Data about sociodemographic characteristics, self-reported weight and height, diet quality, emotional eating, physical activity, and lifestyle changes were collected. Before and after confinement, differences by sociodemographic characteristics were assessed with Wilcoxon, Anova, and linear regression analyses. Most participants were women (80%) between 18 and 38 years old (70%), with a low degree of marginalisation (82.8%) and a high educational level (84.2%); 53.1% had a normal weight and 31.4% were overweight. Half (46.8%) of the participants perceived a change in the quality of their diet. The Diet Quality Index (DQI) was higher during confinement (it improved by 3 points) in all groups, regardless of education level, marginalisation level, or place of residence (p 0.001). Lifestyle changes were present among some of the participants, 6.1% stopped smoking, 12.1% stopped consuming alcohol, 53.3% sleep later, 9% became more sedentary, and increased their screen (43%) as well as sitting and lying down time (81.6%). Mexicans with Internet access staying at home during COVID-19 confinement perceived positive changes in the quality of their diet, smoking, and alcohol consumption, but negative changes in the level of physical activity and sleep quality. These results emphasise the relevance of encouraging healthy lifestyle behaviours during and after times of crisis to prevent the risk of complications due to infectious and chronic diseases

    Sleep matters: Neurodegeneration spectrum heterogeneity, combustion and friction ultrafine particles, industrial nanoparticle pollution, and sleep disorders—Denial is not an option

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    Sustained exposures to ubiquitous outdoor/indoor fine particulate matter (PM2.5), including combustion and friction ultrafine PM (UFPM) and industrial nanoparticles (NPs) starting in utero, are linked to early pediatric and young adulthood aberrant neural protein accumulation, including hyperphosphorylated tau (p-tau), beta-amyloid (Aβ1 − 42), α-synuclein (α syn) and TAR DNA-binding protein 43 (TDP-43), hallmarks of Alzheimer's (AD), Parkinson's disease (PD), frontotemporal lobar degeneration (FTLD), and amyotrophic lateral sclerosis (ALS). UFPM from anthropogenic and natural sources and NPs enter the brain through the nasal/olfactory pathway, lung, gastrointestinal (GI) tract, skin, and placental barriers. On a global scale, the most important sources of outdoor UFPM are motor traffic emissions. This study focuses on the neuropathology heterogeneity and overlap of AD, PD, FTLD, and ALS in older adults, their similarities with the neuropathology of young, highly exposed urbanites, and their strong link with sleep disorders. Critical information includes how this UFPM and NPs cross all biological barriers, interact with brain soluble proteins and key organelles, and result in the oxidative, endoplasmic reticulum, and mitochondrial stress, neuroinflammation, DNA damage, protein aggregation and misfolding, and faulty complex protein quality control. The brain toxicity of UFPM and NPs makes them powerful candidates for early development and progression of fatal common neurodegenerative diseases, all having sleep disturbances. A detailed residential history, proximity to high-traffic roads, occupational histories, exposures to high-emission sources (i.e., factories, burning pits, forest fires, and airports), indoor PM sources (tobacco, wood burning in winter, cooking fumes, and microplastics in house dust), and consumption of industrial NPs, along with neurocognitive and neuropsychiatric histories, are critical. Environmental pollution is a ubiquitous, early, and cumulative risk factor for neurodegeneration and sleep disorders. Prevention of deadly neurological diseases associated with air pollution should be a public health priority
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