245 research outputs found

    Coleta Certa: Modern board game about radioactive waste

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    THE GAME AND TEACHING With the objective of promoting teaching with greater participation of students in the teaching and learning process, associating school content with daily events of students, the modern board game Coleta Certa – like a correct waste collection - was created (Almeida & Vianna, 2022). This game simulates a deposit of radioactive rejects from different locations that use sources of nuclear radiation. The theme of the game provides knowledge about the various places that use radioactive elements and shows how waste that is contaminated in these places by radioisotopes must be treated so as not to contaminate the environment. Regarding the Physics content, the game aims to provide knowledge about the half-life for radioactive decay. The game aims to simulate reality by creating its own rules that are valid for the magic circle created to experience the game (Huizinga, 2019). According to this, it can be said that the game is an excellent tool to simulate a real problem and test possible solutions, developed by the students. In addition, when the Physics content is taught in a way linked to social problems, the content ends up helping not only in the students’ professional training, but also in their critical training, as they will relate the content to the world in which they live. This way of approaching the content is in line with teaching with a focus on Science, Technology and Society (STS) (Aikenhead, 2003). In 2019, this game was applied with a higher education class at the Federal University of Rio de Janeiro and, because the participants' speeches were recorded, it was possible to make an analysis and conclude that the students learned about radioisotope applications and about the half-life concept for radioactive decay (Almeida, 2021). OBJECTIVES GAME AND MAIN RULES The game Coleta Certa represents a radioactive rejects warehouse in a fictional city. Over time, the warehouse became very crowded and it was necessary to hire professionals who could monitor these tailings and verify which ones are no longer emitting radiation at a harmful level to the environment. From there, the players represent these professionals responsible for monitoring the deposit. The winner is the one who accumulates the most points at the end of competition, and these points are related to the right time to collect each waste. For the tailings classified by the players as ready to be collected before or after the right time, in the first case they lose a point, as the tailings still pose a danger, and in the second they gain nothing, as the tailings are taking up unnecessary space. The game allows participants to study the correct time through the half-life of radioisotopes, the initial activity and the exemption level for each waste. Therefore, during the game, everyone must find out the time required for the tailings to decrease the initial activity by an order of magnitude value of the exemption level, as a function of the half-life of the element (Almeida & Vianna, 2022). REFERENCES Aikenhead, G. (2003). STS Education: A rose by any other name. In: Cross, R. (Ed.): A Vision for science education: Responding to the work of Peter J. Fensham, p. 59-75. New York: Routledge Falmer. Almeida, A. C. C. (2021). Jogo de tabuleiro Coleta Certa: Aplicação com alunos cursando o ensino superior. Proceedings of the National Meeting of Games and Ludic Activities in Chemistry, Physics and Biology Teaching. Rio de Janeiro, Brazil: Federal University of Rio de Janeiro. Almeida, A. C. C., & Vianna, D. M. (2022). Coleta Certa: Jogo de tabuleiro moderno sobre rejeitos radioativos. Caminhos da educação matemática em revista (online), 12(1), 304-318. Huizinga J. (2019). Homo Ludens: o jogo como elemento da cultura. São Paulo: Perspectiva

    Transferência de dados via rede elétrica baseado no Protocolo x-10

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    Este trabalho da disciplina de Projeto Final com a tecnologia que permite a transmissão de dados via rede elétrica que é baseado no protocolo de transmissão de dados chamado de X- 10. Com essa tecnologia e possível enviar comandos/dados de um transmissor para o receptor através da rede elétrica. A tecnologia do protótipo envia um conjunto de 8 bits através da rede eletrica utilizando a onda portadora de 60 Hz para poder transmitir somando a essa onda um sinal de 120KHz com o tempo de 1ms toda vez que a onda portadora passa por um eixo zero

    Transferência de dados via rede elétrica baseado no Protocolo x-10

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    Este trabalho da disciplina de Projeto Final com a tecnologia que permite a transmissão de dados via rede elétrica que é baseado no protocolo de transmissão de dados chamado de X- 10. Com essa tecnologia e possível enviar comandos/dados de um transmissor para o receptor através da rede elétrica. A tecnologia do protótipo envia um conjunto de 8 bits através da rede eletrica utilizando a onda portadora de 60 Hz para poder transmitir somando a essa onda um sinal de 120KHz com o tempo de 1ms toda vez que a onda portadora passa por um eixo zero

    The woman's life after mastectomy in the light of Roy Adaptive theory

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    Objective: check the adaptation methods of mastectomies women; raise the presence of changes in the habits of life of women after mastectomy; correlate the adaptive process outlined by the woman with the theory presented by Roy and investigate the care provided by nurses to women with mastectomies. Method: For carrying out the survey was used to type descriptive qualitative approach. Results: The role of nursing in the care the woman, who had been subjected to breast surgery, encompasses care for maintenance of their bodily functions as well as support to those who are involved in the process, the individual as a whole and family. Conclusion: Roy's theory is the bases for hypotheses that can be tested

    Transferência de dados via rede elétrica baseado no protocolo X-10

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    Este trabalho da disciplina de Projeto Final com a tecnologia que permite a transmissão de dados via rede elétrica que é baseado no protocolo de transmissão de dados chamado de X- 10. Com essa tecnologia e possível enviar comandos/dados de um transmissor para o receptor através da rede elétrica. A tecnologia do protótipo envia um conjunto de 8 bits através da rede eletrica utilizando a onda portadora de 60 Hz para poder transmitir somando a essa onda um sinal de 120KHz com o tempo de 1ms toda vez que a onda portadora passa por um eixo zero

    The “Questionnaire of the difference Imaginary Baby vs. Real Baby”: a new instrument for the evaluation of differences between prenatal and postnatal maternal perceptions after delivery

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    Introducción: El bebé imaginario y el bebé real son conceptos importantes para la comprensión tanto de la vida psíquica de la mujer embarazada como de las nuevas madres. Objetivo: Presentar un nuevo instrumento psicométrico para la evaluación de la diferencia entre el bebé imaginario y el bebé real en los primeros días después del parto. Método: Generación de 30 elementos sobre la diferencia entre el bebé imaginario y el bebé real relacionados con las cinco áreas principales de la vida de los recién nacidos: alimentación, sueño, interacción, características del bebé y temperamento. Participantes: el "Cuestionario de la diferencia Imaginario bebé vs. Real bebé" (QDIBRB) fue aplicada a una muestra (n = 190) de madres recientes del Dr. Alfredo da Costa de Lisboa. Resultados: Tras una serie de análisis factoriales, rotación Equamax con extracción forzada a 4 factores que explican el 52,7% de la varianza total) proporcionaron 3 factores sobre las diferencias entre la salud materna prenatal y postnatal y percepciones sobre las siguientes áreas: F1 - bebés' expresiones emocionales positivas (α = .881), F2 - temores maternos relacionados con bebés' significado conductual (α = .850) y F3 - bebés' comportamiento atractivo (α = .783). Para la escala completa es excelente la consistencia interna (α = .921). Conclusión: La QDIBRB parece ser capaz de evaluar las diferencias entre el bebe imaginario y el bebé real de manera psicométrica. Se necesitan investigaciones futuras para demostrar si los datos recopilados con QDIBRB son útiles en el mundo de la psicología perinatal.INTRODUCTION: Fantasmatic baby, imaginary baby and the real baby are important concepts for the understanding of the psychological life of pregnant women as of newly mothers. GOAL: To present a new psychometric instrument for the assessment of the difference between imaginary baby and real baby by the first days after delivery. METHOD: Generation of 30 items about the difference between imaginary baby and real baby related to five main areas of newborns’ life: feeding, sleeping, interaction, baby characteristics and temperament. PARTICIPANTS: The “Questionnaire of the Difference Imaginary Baby vs. Real Baby” (QDIBRB) was applied to a sample (N = 190) of newly mothers at Maternidade Dr. Alfredo da Costa in Lisbon. RESULTS: After a series of factorial analysis, Equamax rotation with extraction forced to 4 factors (explaining 52.7% of total variance) provided 3 factors about differences between maternal prenatal and postnatal perceptions on the following areas: F1 - babies’ positive emotional expressions (α = .881), F2 - maternal fears related with babies’ behavioral meaning (α = .850) and F3 - babies’ appealing behavior (α = .783). For the complete scale internal consistency is excellent (α = .921). CONCLUSION: The QDIBRB seems to be able to assess differences between the imaginary baby and the real baby in a psychometric way. Future research is needed to show if data collected with QDIBRB are useful in the world of perinatal psychology.peerReviewe

    A new factorial approach for the portuguese version of the mother and baby scales (MABS)

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    INTRODUCCIÓN: Las relaciones tempranas madre-hijo son de gran importancia en varios dominios del desarrollo del niño. En los primeros días de vida, es importante evaluar el comportamiento de la madre y del bebé. Las escalas de MABS se han propuesto con el fin de obtener información acerca de las percepciones maternas sobre el comportamiento del bebé y sobre la confianza de la madre para cuidarlo. OBJETIVO: Aplicar la versión portuguesa de la MABS y estudiar su estructura factorial y su consistencia interna. MÉTODO: La versión en portugués del MABS se aplicó en dos muestras de madres recientes portuguesas durante su estancia en el hospital (N = 289). Los resultados fueron sometidos a análisis de componentes principales y de consistencia interna. RESULTADOS: Ocho factores emergieron. Varios de estos factores son similares a los originales: la interfaz de usuario, LCC, A, E, GC, y ADF. Un nuevo factor, CC, se opone a la LCC originales. Otro factor (FIL / LCF) los resultados de la asociación de elementos que pertenecen a dos de los factores originales (FDI y LCF). CONCLUSIÓN: Parece que las dimensiones de la versión portuguesa de la MABS pueden ser útiles para un uso clínico y de investigación en las madres portuguesas, sobre todo porque los aspectos culturales están jugando un papel en la nueva estructura factorial.INTRODUCTION: Early mother-infant relationships are of major importance for several domains of child development. At the first days of life, it is simultaneously important to assess the behavior of both baby and mother. The MABS scales have been proposed in order obtain information about maternal perceptions about the baby behavior and about mother’s confidence to take care of the baby. AIM:To apply the Portuguese version of the MABS and to study their factorial structure and internal consistency. METHOD: The Portuguese version of the MABS was applied in two samples of newly Portuguese mothers while staying in hospital (N = 289). Results were submitted to principal components and internal consistency analyzes. RESULTS : Eight factors emerged. Several of these factors are similar to the original ones: UI, LCC, A, E, GC, and ADF. A new factor, CC, opposes to the original LCC. Another factor (IDF/LCF) results of the association of items belonging to two of the original factors (IDF and LCF). CONCLUSION: It seems that dimensions of the Portuguese version of the MABS may be helpful for clinical use and for research with Portuguese mothers, especially because cultural aspects are playing a role at the new factorial structure.peerReviewe

    Particleboard experimental production with bamboo, pine and mate for one product of new applications

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    Particleboard can be produced from a mixture of different lignocellulosic materials, which can be chosen depending on the density required for the panel and its applications. The aim of this study was to evaluate the mechanical properties of particleboard with bamboo, pine and mate for a new product of high density for the special applications currently served by HDF. Particles of bamboo (Phyllostachys aurea) finely chopped sticks of mate (Ilex paraguariensis) and commercial particles of southern pine (Pinus taeda) wood were used. These particles used 100 % by weight in the panel or in mixtures of 50 % each (three mixtures) or in a triple mixture of one third each, were glued in a drum-type rotary mixer with melamine-urea-formaldehyde (MUF) resin, and pressed in hydraulic press at 120 °C and 5,88 MPa for 10 minutes, up to 6 mm thickness. The panels were produced with 0,90 g∙cm-3 nominal density and, after pressing, were conditioned at 20 ºC and 65 % relative humidity. Statistical was performed by means the variance analysis and simplex centroid experimental design, with three replicates. It was found the use of pine particles contributed mainly to increase the panel's strength and stiffness, while the use of mate particles facilitated internal bond strength. The results compared with the ANSI A208.1 indicate that the panels with potential for use as floors and other applications requiring medium to high mechanical strength. The mixtures modeling showed that the water absorption, the strength and stiffness in bending and the internal bond strength are explained by the cubic model, while the thickness swelling and hardness are explained by the quadratic model. The best physical and mechanical properties results were found for the pine, bamboo and mate same ratio mixture

    Paracoccidioidomicose do sistema nervoso central: análise de 13 casos

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    Paracoccidioidomycosis (PCM) is a systemic granulomatous disease caused by Paracoccidioides brasiliensis, prevalent in Latin America, particularly in Brazil. Central nervous system (CNS) involvement occur in about 10% of cases. Thirteen patients with PCM involving CNS were studied considering clinical manifestation, neuroradiology and treatment modalities. Age ranged from 30 to 71 years-old (M=47.1 +/- 11.6 Me=46). There were eleven men and two women. the most frequent symptoms were motor deficits (53.8%), cognitive disturbance (53.8%), weight loss (46.1%), headaches (46.1%) and seizures (46.1%). the diagnosis was confirmed by the demonstration of P. brasiliensis. Granulomatous forms were present in all patients. Four (30.8%) of them had also meningeal involvement (mixed form). Computerized tomography (CT) scans were obtained in all cases and magnetic resonance imaging (MRI) was used in one case. Serology for HIV was done in ten patients (76.9%), and all the tests were negatives. Amphotericin B was used in twelve patients (92.3%), one of them by intraventricular infusion. in eight patients (61.5%), trimethopim and sulfamethoxazole were used, and, in two (15.4%), sulfadiazine and pirimetamine. Fluconazole, ketoconazole and itraconazole were each one used in a different patient as well. Six patients died (46.1%) and seven (53.9%) had satisfatory outcome. the follow-up period ranged from 2 to 74 (M=30.9) months. in conclusion, the CNS involvement in paracoccidioidomycosis is more frequent and more serious than thought before. the clinical manifestations, CT scans and MRI findings are not specific of paracoccidioidomycosis.Clin Neurol & Neurocirurgia Santa Casa Belo Horiz, Belo Horizonte, MG, BrazilMestre Med Santa Casa Belo Horizonte, Belo Horizonte, MG, BrazilUNIFESP, Escola Paulista Med, São Paulo, BrazilServ Neurocirurg Santa Casa, Belo Horizonte, MG, BrazilUniv Fed Minas Gerais, Dept Bioquim & Imunol, Inst Ciencias Biol, Belo Horizonte, MG, BrazilPrograma Pos Grad Santa Casa, Belo Horizonte, MG, BrazilUNIFESP, Escola Paulista Med, São Paulo, BrazilWeb of Scienc
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