Effect of oxygen pressure on the structural and optical properties of BaSnO3 films prepared by pulsed laser deposition method.

BaSnO3 thin films were deposited on quartz substrate by pulsed laser deposition technique under different background oxygen pressures and the effects of oxygen pressure on the structural, morphological and optical properties of BaSnO3 thin films are systematically investigated using different characterization techniques. The BaSnO3 films deposited without and with oxygen pressures are polycrystalline in nature with cubic crystalline phase. Moderate oxygen ambience favors enhanced crystallinity of the BaSnO3 films and 0.02 mbar is found to be optimum oxygen pressure for highest crystallinity. The surface morphology of the deposited films was strongly affected by the oxygen pressure in the deposition chamber. A systematic increase of film thickness and decrease of RMS surface roughness is observed with increase in oxygen pressure. XPS analysis reveals that barium is in the + 2 oxidation state and Sn is in the + 4 oxidation state in the film deposited at optimum oxygen pressure of 0.02 mbar. The deposited BaSnO3 films have photoluminescence emissions in the visible region and have high transmittance in the visible and infrared regions. The BaSnO3 films deposited at oxygen ambience shows a blue shift in the optical band gap. The optimized film shows high crystallinity, high value of transmittance and wide band gap energy which indicates its suitability for optoelectronic devices

Effect of RF power on the structural and optical properties of zinc sulfide films.

Zinc sulfide (ZnS) films were prepared via a radio frequency (RF) magnetron sputtering technique using different RF powers (100, 120, 150, and 180 W), and the effects of the RF power on the structural and optical properties of the films were studied using x-ray diffraction, micro-Raman spectroscopy, atomic force microscopy, ultraviolet-visible spectroscopy, spectroscopic ellipsometry, and laser photoluminescence spectroscopy. It was found that the RF power has an important impact on the predominant phase formation and crystallinity of the ZnS films. The film thickness, refractive index, and film to bulk relative density increase systematically with an increase in the RF power. Among the various RF power values investigated, 150 W was optimal for the growth of highly crystalline ZnS films with a predominance of the cubic phase and enhanced photoluminescence emissions

Desenvolvimento de competências para uma cultura democrática no 1.º CEB: finalidades e estratégias

Relatório de Prática de Ensino Supervisionada apresentado à Escola Superior de Educação de Lisboa para obtenção de grau de mestre em Ensino do 1.º Ciclo do Ensino Básico e de Matemática e Ciências Naturais no 2.º Ciclo do Ensino BásicoO presente relatório final surge no âmbito da Unidade Curricular de Prática de Ensino Supervisionada II, inserida no 2.º ano do Mestrado em Ensino do 1.º Ciclo do Ensino Básico e de Matemática e Ciências Naturais no 2.º Ciclo do Ensino Básico. Esta Unidade Curricular contempla a realização de duas práticas de ensino supervisionadas, no 1.º e no 2.º Ciclo do Ensino Básico, e a elaboração de um estudo de caráter investigativo. O estudo incluído neste relatório – Desenvolvimento de competências para uma cultura democrática no 1.º CEB: finalidades e estratégias – surgiu através das observações realizadas numa turma de 1.º ano de escolaridade. Pretendemos analisar que tipo de estratégias se poderão implementar numa turma de 1.º ciclo, para que esta desenvolva um vasto leque de competências que promovam uma cultura democrática dentro da sala de aula e, em última instância, para que os alunos desenvolvam a capacidade de analisar e refletir criticamente sobre o mundo em que vivem, para poder transformá-lo. Deste modo, partindo da problemática – o desenvolvimento de competências para uma cultura democrática implica uma prática docente comprometida com os valores democráticos e promotora da participação ativa dos alunos – definimos os seguintes objetivos de intervenção: (i) analisar as rotinas facilitadoras de uma vivência democrática na sala de aula; (ii) identificar as competências democráticas que são privilegiadas nos processos de ensino e aprendizagem desenvolvidos na turma; e (iii) avaliar o contributo dos processos de ensino e aprendizagem e, em particular das rotinas diárias e semanais para o desenvolvimento de Competências para uma Cultura Democrática. Os resultados obtidos permitiram-nos reconhecer (i) que, apesar do curto período de intervenção educativa, através de uma prática docente diferenciada que promova a participação dos alunos nas rotinas do dia-a-dia é possível promover o desenvolvimento de competências para uma cultura democrática nos alunos; (ii) a importância de desenvolver um conjunto de competências para uma formação cidadã e democrática na sala de aula e na escola, tendo em conta as características da sociedade atualABSTRACT This final report was written within the scope of the Curricular Unit of Supervised Teaching Practice II, in the 2nd year of the Master’s in Teaching of the 1st Cycle of Basic Education and of Mathematics and Natural Sciences in the 2nd Cycle of Basic Education. This Curricular Unit includes two supervised teaching practice periods of time, in the 1st and 2nd Cycle of Basic Education, and the conduction of an investigative research. The study included in this Report – Skills development for a democratic culture in the 1st CEB: aims and strategies – emerged from observations made in a 1st grade school class. We intend to analyze what kind of strategies can be implemented in a 1st cycle class, so that it develops a wide range of skills that promote a democratic culture within the classroom and, ultimately, for students to develop the ability to critically analyze and reflect on the world they live in, in order to transform it. Thus, starting from the problematic, the development of skills for a democratic culture implies a teaching practice committed to democratic values and the promotion of student’s active participation, we defined the following intervention objectives: (i) to analyse the routines that facilitate a democratic experience in the classroom; (ii) to identify the democratic competences that are privileged in the teaching and learning processes developed in the class; and (iii) to assess the contribution of teaching and learning processes and, in particular, of daily and weekly routines for the development of Competences for a Democratic Culture. The results obtained allowed us to recognize (i) that, despite the short period of educational intervention, through a differentiated teaching practice that promotes the participation of students in daily routines it is possible to promote the development of skills for a democratic culture in students; (ii) the importance of developing a set of citizenship and democratic education skills in the classroom and at school, considering the characteristics of today's society.N/

Síndrome de Burnout: elementos geradores do processo na ótica de profissionais da rede municipal de educação infantil de Criciúma

Trabalho de Conclusão de Curso, apresentado para obtenção do grau de licenciado no curso de Pedagogia da Universidade do Extremo Sul Catarinense, UNESC.O presente estudo procura contribuir para a prevenção de doenças dos profissionais da área de educação Infantil do Município de Criciúma. Este estudo foi realizado por meio de pesquisa de campo, onde teve como objetivo principal analisar se as professoras de Educação Infantil da rede Municipal de Criciúma percebem elementos geradores da Síndrome de Burnout em seu ambiente de trabalho. A metodologia utilizada para a efetivação do estudo foi de abordagem qualitativa e exploratório-descritiva, tendo como instrumento de coleta de dados a entrevista semi estruturada. Os dados foram coletados em duas escolas de educação infantil da rede municipal de educação do município de Criciúma. Em cada escola foram ouvidas duas professoras regentes. Em seguida, analisamos os dados coletados donde podemos elencar algumas conclusões: as professoras da rede municipal de educação infantil de Criciúma não tem recebido orientações a respeito da Síndrome de Burnout nos processos formativos do sistema educacional e os conceitos que as investigadas possuem sobre a Síndrome de Burnout foram estruturados em processos de leitura individual sobre o assunto

Effect of tungsten doping on the properties of In2O3 films.

Highly crystalline tungsten oxide (WO3)-doped indium oxide (In2O3) films are synthesized at room temperature by the RF magnetron sputtering technique. The structural and morphological properties of the as-deposited films and the films annealed at a temperature of 300°C are investigated in detail. X-ray diffraction analysis reveals the presence of a cubic bixbyite structure with preferred orientation along the (222) plane for both the as-deposited and annealed films. Moderate WO3 doping (1 wt.%) enhances the crystallinity of the as-deposited In2O3 films, whereas the crystallinity of the films systematically decreases with an increase in WO3 doping concentration beyond 1 wt.%. Raman spectral analysis discloses the modes of the cubic bixbyite In2O3 phase in the films. Atomic force microscopy micrographs show a smooth and dense distribution of smaller grains in the films. X-ray photoelectron spectroscopy reveals the existence of W5+ in the doped films. The undoped film is highly oxygen deficient. Variation in the concentration of oxygen vacancy can be associated with the degree of crystallinity of the films

Bisphenol and phthalate exposure during pregnancy and the development of childhood lung function and asthma. The Generation R Study

Background: Fetal exposure to bisphenols and phthalates may lead to alterations in the respiratory and immune system development in children, and to adverse respiratory health. Aim: To study the associations of fetal bisphenols and phthalates exposure with lung function and asthma at age 13 years. Study design and methods: This study among 1020 children was embedded in a population-based prospective cohort study. We measured maternal urine bisphenol and phthalate concentrations in the first, second and third trimester of pregnancy, and lung function by spirometry and asthma by questionnaires at age 13 years. Multivariable linear and logistic regression models were applied. Results: Maternal urine bisphenol and phthalate concentrations averaged during pregnancy were not associated with childhood lung function or asthma. Associations of maternal urine bisphenol and phthalate concentrations in specific trimesters with respiratory outcomes showed that one interquartile range increase in the natural log-transformed maternal urine mono-isobutyl phthalate concentration in the second trimester was associated with a higher FEV1/FVC, but not with asthma, accounting for confounders and multiple-testing correction. Although there were associations of higher second trimester bisphenol S with a lower FVC and FEV1 in boys and girls, and of higher first trimester bisphenol S with a decreased risk of asthma in boys and an increased risk of asthma in girls, these results did not remain significant after correction for multiple testing. Results were not modified by maternal history of asthma or atopy. Conclusions: Maternal urine bisphenol and phthalate concentrations averaged or in specific trimesters during pregnancy were not strongly associated with childhood lung function and asthma at age 13 years. BPS, as a BPA substitute, tended to be associated with impaired lung function and altered risk of asthma, partly sex-dependent, but its strength was limited by a relatively low detection rate and should be queried in contemporary cohorts.</p

Centros de Atenção Psicossocial Álcool e Drogas e a Psicologia

Verifica-se atualmente grande quantidade de pessoas envolvidas de alguma forma com o uso prejudicial de álcool e outras drogas, o que representa um desafio para a saúde pública e para os profissionais. Este artigo tem como objetivo investigar a organização dos Centros de Atenção Psicossociais Álcool e Drogas – CAPS ad – no estado do RS, no que se refere às práticas e/ou intervenções psicológicas. Trata-se de uma pesquisa bibliográfica, de caráter descritivo e exploratório, com a análise dos seguintes temas: histórico da implantação dos CAPS e CAPS ad no RS; rede de atendimento; orientações e políticas de trabalho; indicações de atividades e intervenções dos psicólogos; formação acadêmica e profissional em Psicologia. Foram pesquisadas bases de dados como BVS-PSI e Google Acadêmico, no período de 2001 a 2010 e dados disponíveis de sites de domínio público. Os resultados indicaram que os profissionais psicólogos têm desenvolvido suas atividades parcialmente conforme recomendação do Ministério da Saúde já que encontram limitações para ampliálas e registrá-las. Os resultados também apontam para a escassez de registros dos próprios CAPS ad como um todo. Portanto, o estudo permitiu evidenciar potencialidades dos serviços e também lacunas que viabilizam a qualificação dos mesmos e também futuros estudos com abordagens teóricas e técnicas diferentes

Fetal exposure to phthalates and bisphenols and DNA methylation at birth:the Generation R Study

BACKGROUND: Phthalates and bisphenols are non-persistent endocrine disrupting chemicals that are ubiquitously present in our environment and may have long-lasting health effects following fetal exposure. A potential mechanism underlying these exposure–outcome relationships is differential DNA methylation. Our objective was to examine the associations of maternal phthalate and bisphenol concentrations during pregnancy with DNA methylation in cord blood using a chemical mixtures approach. METHODS: This study was embedded in a prospective birth cohort study in the Netherlands and included 306 participants. We measured urine phthalates and bisphenols concentrations in the first, second and third trimester. Cord blood DNA methylation in their children was processed using the Illumina Infinium HumanMethylation450 BeadChip using an epigenome-wide association approach. Using quantile g-computation, we examined the association of increasing all mixture components by one quartile with cord blood DNA methylation. RESULTS: We did not find evidence for statistically significant associations of a maternal mixture of phthalates and bisphenols during any of the trimesters of pregnancy with DNA methylation in cord blood (all p values > 4.01 * 10(–8)). However, we identified one suggestive association (p value < 1.0 * 10(–6)) of the first trimester maternal mixture of phthalates and bisphenols and three suggestive associations of the second trimester maternal mixture of phthalates and bisphenols with DNA methylation in cord blood. CONCLUSIONS: Although we did not identify genome-wide significant results, we identified some suggestive associations of exposure to a maternal mixture of phthalates and bisphenols in the first and second trimester with DNA methylation in cord blood that need further exploration in larger study samples. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s13148-022-01345-0