A educação ambiental por meio do uso das metodologias ativas: um estudo de caso na cidade de Cabo frio (RJ)

oferta escassa nos serviços de saneamento básico, bem como a eliminação inadequada dos resíduos sólidos urbanos (RSU) são, historicamente, impasses que o Brasil enfrenta. O objetivo deste estudo é analisar e avaliar o processo ensino e aprendizagem de educando, em relação à abordagem das condições de oferta de saneamento básico e eliminação, de forma imprópria, dos RSU. O público-alvo é composto por 36 discentes: 21 mulheres e 14 homens matriculados no Curso Técnico de Hospedagem integrado ao Ensino Médio (CTHIEM) do Instituto Federal Fluminense, campus de Cabo Frio (IFF-CF). Utilizou-se como estratégia de ensino, o uso das metodologias ativas (MA), a fim de sensibilizar os participantes sobre os agravos ambientais. Investiu-se em uma abordagem pedagógica baseada em situações-problema, além de aplicar um questionário elaborado com 5 questões objetivas, formulado pelo aplicativo Quizizz, onde os participantes, após a experenciação obtiveram uma média de 93,33% de respostas corretas (DP: ±6,97; EP: ±2,95).info:eu-repo/semantics/publishedVersio

Proposta de um jogo digital para educação ambiental: saneamento básico para todos

O presente relatório apresenta um das atividades desenvolvidas pela primeira autora, no seu projeto de Doutoramento em Ciências da Informação, Especialidade em Sistemas, Tecnologias e Gestão da Informação, sob a orientação dos professores Doutor Luís Borges Gouveia e Doutora Maria Alzira Dinis, com título provisório: “As metodologias ativas como proposta de intervenção pedagógica em educação ambiental: um estudo de caso na cidade de Cabo Frio, RJ, Brasil”. O objetivo é identificar as perceções que os estudantes tiveram sobre os prejuízos causados ao meio ambiente e a saúde humana, bem como a importância dos serviços de saneamento básico por meio dos conteúdos apresentados no jogo digital: "Saneamento Básico para todos." Preliminarmente, foi feita uma avaliação do jogo por 10 estudantes, escolhidos de forma aleatória, que após jogarem sugeriram uma série de ajustes que foram efetuados junto ao desenvolvedor. Após essa fase, foi solicitado que os estudantes do Curso de Hospedagem Integrado ao Ensino Médio (CHIEM), do Instituto Federal Fluminense de Cabo Frio (IFF/CF), baixassem o jogo e após jogarem, deveriam responder a um questionário previamente elaborado, composto por 13 perguntas objetivas, aplicando a Escala Likert, e 3 perguntas subjetivas. Em termos de considerações finais, de acordo com as respostas dos educandos foi possível perceber que o jogo alerta sobre a importância da instalação da rede de saneamento básico para a cidade, portanto, 97,1% dos participantes responderam concordar com essa temática.info:eu-repo/semantics/publishedVersio

Measuring the degree of stacking order in graphite by Raman spectroscopy

ArticleCARBON. 46(2):272-275(2008)journal articl

Jogos digitais educacionais como uma proposta de trabalho em educação ambiental

Pereira, R.; Gouveia, L. e Dinis, A. (2021). Jogos digitais educacionais como uma proposta de trabalho em Educação Ambiental. Seminário Doutoramento em Ciência da Informação, especialidade Sistemas, Tecnologias e Gestão da Informação (SITEGI). 16 de Julho. Universidade Fernando Pessoa. Porto.info:eu-repo/semantics/publishedVersio

FRACTURES OF THE NECK OF THE TALUS: EVALUATION OF REPRODUCIBILITY OF HAWKINS' CLASSIFICATION

Objective: To evaluate the intraobserver and interobserver reproducibility of Hawkins' classification for fractures of the neck of the talus. Methods: 20 random cases of fracture of the talus were selected, to be defined according to the classification of types by eight orthopedic surgeons, 13 orthopedic residents and 15 radiology residents. Results: Using the statistical test of Landis and Koch, measurements of 0.627 and 0.668 were obtained in the first and second evaluations, respectively. These values define a satisfactory agreement for Hawkins' classification. Conclusion: We conclude that this classification is reproducible between observers, with better values for the more experienced observers. Level of Evidence I, Study Diagnostic - Investigating a diagnostic test.20317017

Body composition and body fat distribution are related to cardiac autonomic control in non-alcoholic fatty liver disease patients

BACKGROUND/OBJECTIVES: Heart rate recovery (HRR), a cardiac autonomic control marker, was shown to be related to body composition (BC), yet this was not tested in non-alcoholic fatty liver disease (NAFLD) patients. The aim of this study was to determine if, and to what extent, markers of BC and body fat (BF) distribution are related to cardiac autonomic control in NAFLD patients. SUBJECTS/METHODS: BC was assessed with dual-energy X-ray absorptiometry in 28 NAFLD patients (19 men, 51±13 years, and 9 women, 47±13 years). BF depots ratios were calculated to assess BF distribution. Subjects’ HRR was recorded 1 (HRR1) and 2 min (HRR2) immediately after a maximum graded exercise test. RESULTS: BC and BF distribution were related to HRR; particularly weight, trunk BF and trunk BF-to-appendicular BF ratio showed a negative relation with HRR1 (r 1⁄4 0.613, r 1⁄4 0.597 and r 1⁄4 0.547, respectively, Po0.01) and HRR2 (r 1⁄4 0.484, r 1⁄4 0.446, Po0.05, and r 1⁄4 0.590, Po0.01, respectively). Age seems to be related to both HRR1 and HRR2 except when controlled for BF distribution. The preferred model in multiple regression should include trunk BF-to-appendicular BF ratio and BF to predict HRR1 (r2 1⁄4 0.549; Po0.05), and trunk BF-to-appendicular BF ratio alone to predict HRR2 (r2 1⁄4 0.430; Po0.001). CONCLUSIONS: BC and BF distribution were related to HRR in NAFLD patients. Trunk BF-to-appendicular BF ratio was the best independent predictor of HRR and therefore may be best related to cardiovascular increased risk, and possibly act as a mediator in age-related cardiac autonomic control variation.info:eu-repo/semantics/publishedVersio

Nonlinear ion-acoustic (IA) waves driven in a cylindrically symmetric flow

By employing a self-similar, two-fluid MHD model in a cylindrical geometry, we study the features of nonlinear ion-acoustic (IA) waves which propagate in the direction of external magnetic field lines in space plasmas. Numerical calculations not only expose the well-known three shapes of nonlinear structures (sinusoidal, sawtooth, and spiky or bipolar) which are observed by numerous satellites and simulated by models in a Cartesian geometry, but also illustrate new results, such as, two reversely propagating nonlinear waves, density dips and humps, diverging and converging electric shocks, etc. A case study on Cluster satellite data is also introduced.Comment: accepted by AS

Preliminary Investigation Into the Effect of ACTN3 and ACE Polymorphisms on Muscle and Performance Characteristics

Preliminary investigation into the effect of ACTN3 and ACE polymorphisms on muscle and performance characteristics. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this investigation was to explore the phenotypic and performance outcomes associated with ACTN3 and ACE polymorphisms. Ten trained men (age = 25.8 ± 3.0 years, height = 183.3 ± 4.1 cm, body mass = 92.3 ± 9.3 kg, and back squat to body mass ratio = 1.8 ± 0.3) participated. Blood samples were analyzed to determine ACTN3 and ACE polymorphisms. Standing ultrasonography images of the vastus lateralis (VL) were collected to determine whole muscle cross-sectional area (CSA-M), and a percutaneous muscle biopsy of the VL was collected to determine type I-specific CSA (CSA-T1), type II-specific CSA (CSA-T2), and type II to type I CSA ratio (CSA-R). Isometric squats were performed on force platforms with data used to determine peak force (IPF), allometrically scaled peak force (IPFa), and rate of force development (RFD) at various timepoints. One repetition maximum back squats were performed, whereby allometrically scaled dynamic strength (DSa) was determined. Cohen\u27s d effect sizes revealed ACTN3 RR and ACE DD tended to result in greater CSA-M but differ in how they contribute to performance. ACTN3 RR\u27s influence seems to be in the type II fibers, altering maximal strength, and ACE DD may influence RFD capabilities through a favorable CSA-R. Although the findings of the current investigation are limited by the sample size, the findings demonstrate the potential influence of ACTN3 and ACE polymorphisms on isometric and dynamic strength testing. This study may serve as a framework to generate hypotheses regarding the effect of genetics on performance

Density functional theory calculations of the carbon ELNES of small diameter armchair and zigzag nanotubes: core-hole, curvature and momentum transfer orientation effects

We perform density functional theory calculations on a series of armchair and zigzag nanotubes of diameters less than 1nm using the all-electron Full-Potential(-Linearised)-Augmented-Plane-Wave (FPLAPW) method. Emphasis is laid on the effects of curvature, the electron beam orientation and the inclusion of the core-hole on the carbon electron energy loss K-edge. The electron energy loss near-edge spectra of all the studied tubes show strong curvature effects compared to that of flat graphene. The curvature induced $\pi-\sigma$ hybridisation is shown to have a more drastic effect on the electronic properties of zigzag tubes than on those of armchair tubes. We show that the core-hole effect must be accounted for in order to correctly reproduce electron energy loss measurements. We also find that, the energy loss near edge spectra of these carbon systems are dominantly dipole selected and that they can be expressed simply as a proportionality with the local momentum projected density of states, thus portraying the weak energy dependence of the transition matrix elements. Compared to graphite, the ELNES of carbon nanotubes show a reduced anisotropy.Comment: 25 pages, 15 figures, revtex4 submitted for publication to Phys. Rev.

Intervalley scattering by acoustic phonons in two-dimensional MoS2 revealed by double-resonance Raman spectroscopy

Double-resonance Raman scattering is a sensitive probe to study the electron-phonon scattering pathways in crystals. For semiconducting two-dimensional transition-metal dichalcogenides, the double-resonance Raman process involves different valleys and phonons in the Brillouin zone, and it has not yet been fully understood. Here we present a multiple energy excitation Raman study in conjunction with density functional theory calculations that unveil the double-resonance Raman scattering process in monolayer and bulk MoS2. Results show that the frequency of some Raman features shifts when changing the excitation energy, and first-principle simulations confirm that such bands arise from distinct acoustic phonons, connecting different valley states. The double-resonance Raman process is affected by the indirect-to-direct bandgap transition, and a comparison of results in monolayer and bulk allows the assignment of each Raman feature near the M or K points of the Brillouin zone. Our work highlights the underlying physics of intervalley scattering of electrons by acoustic phonons, which is essential for valley depolarization in MoS2