Construction of a projection spectrograph and its use in optical spectroscopy classrooms demonstrations

This article describes a projection spectrograph for use in optical spectroscopy classrooms demonstrations. The apparatus is based on an overhead projector and permits the visualization of several phenomena such as, light dispersion by diffraction gratings, diffraction order, optical fluorescence, continuous and discrete optical emission spectra, and light absorption by liquids and solids. A historical survey about the optical spectroscopy development is also presented

Repressão ao ilícito de operação clandestina de instituição financeira: infrações administrativas e penal, tipicidade e dosiometria da pena na interação entre direito administrativo sancionador e direito penal

Divulgação dos SUMÁRIOS das obras recentemente incorporadas ao acervo da Biblioteca Ministro Oscar Saraiva do STJ. Em respeito à Lei de Direitos Autorais, não disponibilizamos a obra na íntegra.Localização na estante: 343.35(81) O48

Física em quadrinhos: uma abordagem de ensino

Apresenta as tirinhas produzidas sobre uma proposta de abordagem de ensino de ciências da natureza com enfoque em CTS. As tirinhas exploram o subtema da Física: reflexão em espelhos planos. Esse material pretende levantar questões sobre os fenômenos em situações do cotidiano, e junto a elas são colocadas outras questões e/ou atividades, dentro da proposta de atividades investigativas e argumentação na sala de aula, que estão relacionadas com a situação dentro dos quadrinhos. O material é dividido em cinco unidades que contemplam os tópicos dentro do assunto Espelhos Planos: (i) reversão da imagem; (ii) posição da imagem; (iii) campo visual; (iv) associação de espelhos e (v) curiosidades sobre espelhos

Breves observações sobre a carência de ação

- Texto de autoria de Ministro aposentado do Superior Tribunal de Justiça

Revisiting the fossil group candidates UGC 842 and NGC 6034

We present a new insight on NGC 6034 and UGC 842, two groups of galaxies previously reported in the literature as being fossil groups. The study is based on optical photometry and spectroscopy obtained with the CTIO Blanco telescope and Sloan Digital Sky Survey archival data. We find that NGC 6034 is embedded in a large structure, dominated by three rich clusters and other small groups. Its first and next four ranked galaxies have magnitude differences in the r band and projected distances which violate the optical criteria to classify it as a fossil group. We confirm that the UGC 842 group is a fossil group, but with about half the velocity dispersion that is reported in previous works. The velocity distribution of its galaxies reveals the existence of two structures in its line of sight, one with sigmaV ~ 223 km/s and another with sigmaV ~ 235 km/s, with a difference in velocity of ~820 km/s. The main structure is dominated by passive galaxies, while these represent ~60% of the second structure. The X-ray temperature for the intragroup medium of a group with such a velocity dispersion is expected to be kT ~0.5-1 keV, against the observed value of kT ~1.9 keV reported in the literature. This result makes UGC 842 a special case among fossil groups because (1) it represents more likely the interaction between two small groups, which warms the intragroup medium and/or (2) it could constitute evidence that member galaxies lost energy in the process of spiraling toward the group center, and decreased the velocity dispersion of the system. As far as we know, UGC 842 is the first low-mass fossil group studied in detail.Comment: 18 pages, 8 figures, published in A

CAUSALIDADE E ELASTICIDADE NA TRANSMISSÃO DE PREÇO DO BOI GORDO ENTRE REGIÕES DO BRASIL E A BOLSA DE MERCADORIAS & FUTUROS (BM&F)

This study analyzes the transmission elasticity and the price causality of beef, between BM&F and important places in Brazil, seeking data referring to the intensity of price transmission and detecting the existent relations between beef price in these places and in BM&F. Studies in several regions were realized, using daily price data in a period comprehended between 2000 and 2004. The studied cities were Araçatuba (SP), Barretos (SP), Bauru (SP), Presidente Prudente (SP), Noroeste do Paraná (PR), Três Lagoas (MS), Campo Grande (MS), Triângulo Mineiro (MG), Dourados (GO), Goiânia (GO) and Cuiabá (MT). The results of the Dickey-Fuller Augmented (DFA) unit root test show that all price series are integrated of first order, I(1). The results of the Johansen co-integration test suggest that all series are co-integrated. It can be concludedm thus, that the beef markets are spatially integrated , which means that supply and demand shocks in BM&F affect the beef prices in the other markets. Another outcome of this research, resulting from the estimation of an error correction model and the application of the Granger causality test, is that the BM&F Granger-causes the prices in the other regions. Now with the price transmission elasticity verify that its elasticity maintains around 1, turning in some place as elastic as inelastic. Therefore, the results of this research suggest that the Brazilian beef market is efficient, since information has flowed rapidly among the market agents, allowing arbitrage and the Law of One Price to work properly.beef market, causality, price transmission elasticity., Livestock Production/Industries, Demand and Price Analysis,

The Community Gardening Project in Belo Horizonte: practicing systemic networks, agroecology and solidarity economy

Nowadays, most of the Brazilian population is living in cities, and slums are growing with poor living conditions, in a context of enormous social-economic inequality. One of the local challenges is the poor nutrition of its inhabitants, along with the high cost of healthier food. This paper presents the results of an urban gardening project, developed through the partnership of universities, communities and public institutions at the city of Belo Horizonte, Minas Gerais. It represents university research and extension projects on building community gardens, aiming at the constitution of a social-economic innovative process to increase local social cohesion, popular protagonism and food sovereignty. Each garden that is part of the Community Gardening Project is facing particular challenges in relation to its social, environmental and economic sustainability, but the initiative is proving to be a significant alternative to humanize those spaces, systemically bringing together approaches as Systemic Design, Agroecology and Food Sovereignty and Solidarity Economy, Integral Endeavours and developing cooperative and innovative actions

The Community Gardening Project in Belo Horizonte: practicing systemic networks, agroecology and solidarity economy

Nowadays, most of the Brazilian population is living in cities, and slums are growing with poor living conditions, in a context of enormous social-economic inequality. One of the local challenges is the poor nutrition of its inhabitants, along with the high cost of healthier food. This paper presents the results of an urban gardening project, developed through the partnership of universities, communities and public institutions at the city of Belo Horizonte, Minas Gerais. It represents university research and extension projects on building community gardens, aiming at the constitution of a social-economic innovative process to increase local social cohesion, popular protagonism and food sovereignty. Each garden that is part of the Community Gardening Project is facing particular challenges in relation to its social, environmental and economic sustainability, but the initiative is proving to be a significant alternative to humanize those spaces, systemically bringing together approaches as Systemic Design, Agroecology and Food Sovereignty and Solidarity Economy, Integral Endeavours and developing cooperative and innovative actions