Influence of aluminium oxide particles on bond strength after dentin sealing

Poster presented at the 25th Annual Meeting of the Portuguese Dental Association. Exponor, Porto, 10-12 November 2016.info:eu-repo/semantics/publishedVersio

The importance of oriented physical activity in the first 48 months : differences in motor skills

Background: The importance of physical activity in the first months of age is well known, however, with the evolution of the urban environment, the excessive workload of parents and the excessive time in growing up in kindergartens has limited this same free practice and little has been studied about this issue. In Portugal, there are institutions that provide oriented physical activity for their children, however, this is optional, which may create disadvantages in children’s motor skills in these ages. Objective: The objective of the study isto verify if there are differences in the development of motor skills (global and fine) comparing children between 12 and 48 months who practice oriented physical activity (OPA) and children who do not. Methods: Participated in this study, 400 children of both genders (28.14 ± 7.23 months). Two groups were created (the group that had oriented physical activity (30 min long and 2 times a week) and the group that didn’t have oriented physical activity). For a better understanding they were divided into 3 age groups (12–23, 24–35 and 36–48 months). Motor skills were assessed using the PDMS-2 scales, for 6 months, following the instrument’s application standards. Results: In a first analysis, we found that the majority of children only start to practice oriented physical activity in institutions from 36 months of age, however, it is in the first months (from 12 to 35) that the greatest differences between the two groups can occur. The OPA group presented better results according to the mean values, in all motor skills. Differences between groups were most noticeable in Postural, locomotion and fine manipulation Skills (showing effect size: moderate and low). Conclusions: We can conclude that a practice of oriented physical activity in the first 48 months is fundamental to the development of motor skills. It is in the first months (up to 36) that there are greater differences, but it is also where there are less children carrying out guided physical activity. This is an important factor, and is determinant to make institutions aware of this importance of this variable in child development.info:eu-repo/semantics/publishedVersio

A volta da Cobra Canoa: em busca de uma antropologia indígena

Este texto, escrito a quatro mãos, trata do processo das Políticas Afirmativas no Programa de Pós-Graduação em Antropologia da Universidade Federal do  Amazonas (UFAM). Ele descreve o enfrentamento dos desafios e o desenvolvimento de um exercício de reflexividade na busca de uma antropologia indígena.     This text, written in four hands, deals with the process of Políticas Afirmativas in the Postgraduate Program in Anthropology of Universidade Federal do Amazonas (UFAM). It describes the confrontation of the challenges and the development of an exercise of reflexivity in the search for an indigenous anthropology

Functional fitness and nutritional status of institutionalized elderly

BACKGROUND: Measuring the functional fitness is essential to provide a working basis for assessing and prescribing exercises. There is a special interest in developing procedures and tests able to provide reliable information and general vocabulary for researchers and practitioners. We intend with this study to analyze the functional fitness of different groups of institutionalized elderly of both genders, relating it with their nutritional status. METHODS: A sample of 46 participants, 31 males and 15 females aged between 65 to 93. For this investigation, the Mini Nutritional Assessment (MNA) was used in order to categorize the nutritional status with a Mediterranean diet that was used. For the assessment of the functional fitness, it the battery Fullerton Functional Fitness Test (FFFT) developed in 1999 by Rikli and Jones was used. RESULTS: We found that the elderly who maintained a diet divided into seven meals had more favorable values in all categories of the battery tests with significant differences. We also found that the nutritional status of the elderly and the number of meals is statistically significant in tasks measuring strength, agility and aerobic capacity. CONCLUSIONS: The elderly with normal nutritional status have better performance in the battery tasks, particularly those who choose the diet divided into seven daily meals. The Mediterranean Diet used seems to be favorable in this population, in both genders and it promotes the maintenance of their physical abilities.info:eu-repo/semantics/publishedVersio

O DESENHO COMO ESTRATÉGIA PEDAGÓGICA NO ENSINO DE QUÍMICA: UMA ANÁLISE ATRAVÉS DAS CONCEPÇÕES E PERSPECTIVAS DOS ESTUDANTES DO ENSINO MÉDIO

A química trilhou um caminho próprio entre as ciências, enfrentando a dificuldade de interpretação e descrição dos fenômenos de transformação da matéria, o que levou à criação de uma linguagem química (ROQUE e SILVA, 2008), abrindo espaço para o desenho como instrumento de organização de sua linguagem. Neste sentido, diversos trabalhos que exploram as metodologias de ensino dessa disciplina mostram que essa forma de expressão se faz presente em grande parte de suas ações educacionais. A nossa pesquisa teve como objetivo explorar a visão que os estudantes têm sobre o uso do desenho na aprendizagem; identificar se há um reconhecimento por parte dos estudantes sobre a importância dessa forma de expressão na construção da linguagem química, bem como identificar se há reconhecimento, por parte dos estudantes, de que as atividades que envolvem a elaboração de desenhos melhoram sua aprendizagem.O estudo revelou que os alunos são pouco estimulados a fazer desenhos para expressar sua aprendizagem e queo desenho tem sido pouco difundido como instrumento auxiliar do processo de aprendizagem no ensino de química

Modelling of n-stage Blumlein stacked lines for bipolar pulse generation

A Blumlein line is a particular Pulse Forming Line, PFL, configuration that allows the generation of high-voltage sub-microsecond square pulses, with the same voltage amplitude as the dc charging voltage, into a matching load. By stacking n Blumlein lines one can multiply in theory by n the input dc voltage charging amplitude. In order to understand the operating behavior of this electromagnetic system and to further optimize its operation it is fundamental to theoretically model it, that is to calculate the voltage amplitudes at each circuit point and the time instant that happens. In order to do this, one needs to define the reflection and transmission coefficients where impedance discontinuity occurs. The experimental results of a fast solid-state switch, which discharges a three stage Blumlein stack, will be compared with theoretical ones

Aquatic influence on mobility of a child with duchenne muscular dystrophy : case study

The study was initiated because one of the authors had a child in the family with Duchenne muscular dystrophy (DMD). The author was concerned about what could be done to improve the quality of life of this child. The hypotheses explored whether hydrotherapy could bring any relief or advantage in functional mobility to an individual with DMD and whether a water environment facilitates mobility, pleasure, and joy for a young child with Duchenne muscular dystrophy. Our sample had three individuals, all of them boys, 9-11 years of age. Two were the control group and didn’t practice any kind of physical activity and the other one was our two-year longitudinal case study during which he experienced hydrotherapy practice two times a week for forty-five minutes each. We applied the Egen Klassifikation (EK) scale to quantify the degree of movement limitation present at each of five measurement points over the two years. The variables analyzed were the physical activity issues and the EK scale values. The descriptive results showed that all three individuals increased their EK scale values over time, showing the inevitable progression of the disease. The individual who participated in the water activity sessions had the slower increase that we inferred, meant less deterioration in functional movement. No inferences can be drawn from these limited data, especially because only one individual experienced the water activities. This study does provide the impetus for subsequent, larger controlled studies to see if they could replicate these initial case study results.info:eu-repo/semantics/publishedVersio

DIAGRAMA DE CORLLET RELACIONADOS AO CID DOS TRABALHADORES DA EMPRESA ELLO PAINÉIS MADEIRAS LTDA, DO MUNICÍPIO DE PONTE SERRADA-SC

A presente pesquisa caracteriza-se como descritiva com uma abordagem quantitativa e qualitativa. A população investigada foi determinada por colaboradores do sexo masculino e feminino da empresa Ello Painéis de Madeiras LTDA, do município de Ponte Serrada-SC, a amostra foi composta por 61 colaboradores, sendo 37 do sexo masculino e 24 do sexo feminino. A coleta de dados ocorreu no período de agosto a outubro de 2016, na respectiva empresa, sendo que foi feito o preenchimento do instrumento extra laboral, pelo respectivo pesquisador. Que forneceu informação sobre o correto preenchimento e recolheu o termo de adesão da pesquisa. Para avaliar a presença, localização e intensidade das queixas de dor osteomuscular, utiliza-se o Diagrama de Corllet (DC), construído e validado por Corllet e Bishop (1976) e adaptado para sua utilização no Brasil por LIDA (1990). No mês de junho o masculino apresentou um total de 8 CID e 14 em julho, já para o feminino houve um total de 14 CID em junho e 10 em julho, ambos apresentados nos recursos humanos, entretanto houve um total de 84 CID no ano, o que pode se evidenciar com o período de inverno. Para uma melhor avaliação do número de lesões em colaboradores são necessários mais estudos referentes ao assunto e, posteriormente, a criação de estratégias e técnicas para melhorar as condições do setor de trabalho

Atividade física versus avaliação da aptidão física funcional de idosos

Este estudo tem como objetivo avaliar o impacto da prática de atividade física (AF) na aptidão física funcional de idosos. A amostra, constituída por 348 idosos com idades compreendidas entre 61 e 97 anos de idade foi dividida em 2 grupos (254 praticantes de AF e 94 não praticantes de AF). A aptidão física foi avaliada seguindo o protocolo de testes da bateria de testes Senior Fitness Test (Rikli & Jones, 2001). Para além de estatística descritiva, foram utilizados os métodos estatísticos de Kolmogorov Smirnov, Mann-Whitney e Kruskal Wallis. Os resultados permitiram identificar diferenças estatisticamente muito significativas entre praticantes e não praticantes de AF. Os praticantes de AF apresentam médias significativamente superiores aos não praticantes. A prática de qualquer uma das modalidades (Hidroginástica, Ginástica) produz diferenças muito significativas para com o grupo de não praticantes, sendo as médias obtidas em qualquer um dos testes de aptidão física dos dois grupos de prática muito superiores ás do grupo de não praticantes. Verificam-se, ainda, diferenças estatisticamente significativas entre os praticantes de Hidroginástica e de Ginástica nos testes Sentado, caminhar 2,44 m e voltar a sentar e Caminhar 6 minutos, obtendo os praticantes de ginástica sénior melhores médias nestes dois testes.info:eu-repo/semantics/publishedVersio

The age and depositional environments of the lower Karoo Moatize Coalfield of Mozambique: insights into the postglacial history of central Gondwana

ABSTRACT: The Moatize Coalfield belongs to a network of continental Karoo basins of central Mozambique, known as the Zambezi Basin. Palynological and sedimentological studies were performed on four coal exploration boreholes to determine the age, depositional settings, and overall geological evolution of its extensive coal deposits. Clastic formations recognised in this coalfield, in ascending order, are the Vúzi, Moatize and Matinde formations. Palynomorph assemblages indicate that the Moatize Coalfield succession ranges from Roadian (lower Guadalupian) to Changhsingian (upper Lopingian) in age. Two main depositional phases are identified, whose initiation and development are attributed to regional tectonic events and climate amelioration. The first phase formed towards the end of the deglacial period, characterised initially by fan deltas, represented by the upper Vúzi Formation, and the shift to lake–delta environments, represented by the lower part of the Moatize Formation. This phase took place from Roadian to the Wordian times. The lake–delta settings indicate a sediment aggradation trend with high subsidence rates in the lake basin, which, together with the associated post-glacial climate amelioration, led to the accumulation of coal deposits in swamps of the delta top and lake margins. The second depositional phase took place from Capitanian to Changhsingian times and related to fluvial environments initiated by uplift that reorganised the depocenter into alluvial plains characterised by bedload dominated rivers (braided) and overbank floodplains. Results obtained in this study provide critical information for the onset of the deglaciation events and the age of coal deposits in this part of Gondwana, important for wider stratigraphic correlation of these events in Africa and throughout the Gondwana.info:eu-repo/semantics/acceptedVersio