Flora fanerogâmica da Serra do Ouro Branco, Minas Gerais: Myrtaceae

Myrtaceae é uma das famílias mais representativas da flora brasileira, fato que não tem sido acompanhado por um número expressivo de trabalhos taxonômicos. O presente estudo teve como objetivo realizar o tratamento taxonômico para a família na Serra do Ouro Branco, o ponto mais ao sul da Serra do Espinhaço. Foram registrados 10 gêneros e 24 espécies para a região: Accara (1 sp.), Blepharocalyx (1 sp.), Calyptranthes (2 spp.), Campomanesia (2 spp.), Eugenia (2 spp.), Marlierea (2 spp.), Myrceugenia (2 spp.), Myrcia (10 spp.), Psidium (1 sp.), Siphoneugena (1 sp.). São apresentados chaves de identificação, descrições e comentários sobre gêneros e espécies.

Phylogenetic relation among bovine rabies cases from Minas Gerais and Sao Paulo States, Brazil: a possible common origin

Acknowledgements: CAPES, FAPESP process number 2011/06236-0

Sinais clínicos e ocorrência de anticorpos anti-Chlamydophila abortus em ovinos de São Paulo e Minas Gerais

A Chlamydophila abortus, anteriormente conhecida como Chlamydia psittaci sovovar 1, é uma bactéria Gram negativa, intracelular obrigatória. Esse micro-organismo é frequentemente encontrado em distúrbios reprodutivos em ovinos, bovinos e caprinos, sendo o aborto epizoótico dos bovinos e o aborto enzoótico dos ovinos e caprinos as manifestações mais importantes. Considerando-se o pouco material literário a respeito da clamidofilose no Brasil, a pesquisa teve como objetivo determinar a presença de anticorpos fixadores de complemento anti-Chlamydophila abortus, correlacionando os resultados obtidos com achados no exame clínico e histórico dos animais, além de alterações nos índices zootécnicos, em especial na esfera reprodutiva, tais como alto índice de repetição de cio, número elevado de abortamentos, elevado número de natimortos, entre outros. Foram testadas para prova de fixação do complemento 220 amostras de soro de ovinos, de 26 propriedades, distribuídas em 19 municípios, com relato de manifestação reprodutiva, obtendo-se 19,55% (43/220) de testes positivos para Chlamydophila abortus, com ocorrência de foco constatada de 61,53%. No geral, a titulação de anticorpos encontrada foi baixa, com título não superior a 64. A frequência de manifestação reprodutiva mais observada foi o aborto, representando 65,12% (28/43) do número total de animais soropositivos, seguido de repetição de cio juntamente com nascimento de cordeiro fraco, com frequência de 6,98% (3/ 43) e, por fim, morte neonatal com 4,65% (2/43), sendo que não houve associação significativa entre animais que foram positivos ao teste e a esses fatores.

Fluorcalciomicrolite, (Ca,Na,□)2Ta2O6F, a new microlite-group mineral from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil

Fluorcalciomicrolite, (Ca,Na,□)2Ta2O6F, is a new microlite-group, pyrochlore supergroup mineral approved by the CNMNC (IMA 2012-036). It occurs as an accessory mineral in the Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil. Associated minerals include: microcline, albite, quartz, muscovite, spodumene, "lepidolite", cassiterite, tantalite-(Mn), monazite-(Ce), fluorite, "apatite", beryl, "garnet", epidote, magnetite, gahnite, zircon, "tourmaline", bityite, hydrokenomicrolite, and other microlite-group minerals under study. Fluorcalciomicrolite occurs as euhedral, untwinned, octahedral crystals 0.1-1.5 mm in size, occasionally modified by rhombododecahedral faces. The crystals are colourless and translucent; the streak is white, and the lustre is adamantine to resinous. It does not fluoresce under ultraviolet light. Mohs' hardness is 4½- 5, tenacity is brittle. Cleavage is not observed; fracture is conchoidal. The calculated density is 6.160 g/cm3. The mineral is isotropic, ncalc. = 1.992. The Raman spectrum is dominated by bands of B-X octahedral bond stretching and X-B-X bending modes.The chemical composition (n = 6) is (by wavelength dispersive spectroscopy, H2O calculated to obtain charge balance, wt.%): Na2O 4.68, CaO 11.24, MnO 0.01, SrO 0.04, BaO 0.02, SnO2 0.63, UO2 0.02, Nb2O5 3.47, Ta2O5 76.02, F 2.80, H2O 0.48, O=F -1.18, total 98.23. The empirical formula, based on 2 cations at the B site, is (Ca1.07Na0.81□0.12)∑2.00(Ta1.84Nb0.14Sn0.02)∑2.00 [O5.93(OH)0.07]6.00[F0.79(OH)0.21]. The strongest eight X-ray powder-diffraction lines [d in Å(I)(hkl)] are: 5.997(59)(111), 3.138(83)(311), 3.005(100)(222), 2.602(29)(400), 2.004(23)(511), 1.841(23)(440), 1.589(25)(533), and 1.504(24)(444). The crystal structure refinement (R1 = 0.0132) gave the following data: cubic, Fd3m, a = 10.4191(6) Å, V = 1131.07(11) Å3, Z = 8.

Desarrollo del turismo cultural de la ciudad histórica de Ouro Prieto (Minas Gerais-Brasil), Patrimonio de la Humanidad

Programa de doctorado: Turismo y sostenibilidad.

The supergene thorium and rare-earth element deposit at Morro do Ferro, Poços de Caldas, Minas Gerais, Brazil

The thorium and rare-earth element (Th-REE) deposit at Morro do Ferro formed under supergene lateritic weathering conditions. The ore body consists of shallow NW-SE elongated argillaceous lenses that extend from the top of the hill downwards along its south-eastern slope. The deposit is capped by a network of magnetite layers which protected the underlying highly weathered, argillaceous host rock from excessive erosion. The surrounding country rocks comprise a sequence of subvolcanic phonolite intrusions that have been strongly altered by hydrothermal and supergene processes. From petrological, mineralogical and geochemical studies, and mass balance calculations, it is inferred that the highly weathered host rock was originally carbonatitic in composition, initially enriched in Th and REEs compared to the surrounding silicate rocks. The intrusion of the carbonatite caused fenitic alteration in the surrounding phonolites, consisting of early potassic alteration followed by a vein-type Th-REE mineralization with associated fluorite, carbonate, pyrite and zircon. Subsequent weathering has completely decomposed the carbonatite forming a residual supergene enrichment of Th and REEs. Initial weathering of the carbonatite has created a chemical environment that might have been conductive to carbonate and phosphate complexing of the REEs in groundwaters. This may have appreciably restricted the dissolution of primary REE phases. Strongly oxidic weathering has resulted in a fractionation between Ce and the other light rare earth elements (LREEs). Ce3+ is oxidized to Ce4+ and retained together with Th by secondary mineral formation (cerianite, thorianite), and by adsorption on poorly crystalline iron- and aluminium-hydroxides. In contrast, the trivalent LREEs are retained to a lesser degree and are thus more available for secondary mineral formation (Nd-lanthanite) and adsorption at greater depths down the weathering column. Seasonally controlled fluctuations of recharge waters into the weathering column may help to explain the observed repetition of Th-Ce enriched zones underlain by trivalent LREE enriched zones.

Economia solidária e trabalho coletivo : Um olhar sobre a Cooperativa do Riachão no Norte de Minas Gerais - Brasil

It is intended to discuss the prospect of collective work in solidarity economy, from experiences with those of the Cooperative Riachao workers, located in a rural community in the municipality of Montes Claros, Minas Gerais / Brazil, this approximately 240 farming families extractive are benefited with the generation of jobs and income through initiatives grounded in associations, cooperatives and collectives. Among the 80 to 90 years, appeared inBrazil experiences of solidarity, resulting economy of the labor market crisis and rising unemployment, and an important response to the workers in relation to changes in the world of work. It is grounded in the organization of groups of workers, by way of solidarity, community, cooperation, and self-management reactions. In this sense, we intend to present the achievements, challenges and dilemmas of workers COOPERIACHAO, around a project that aims at empowerment of social actors and social transformation of the subject

Partir e ficar : Dinâmicas nos processos de migraçao e imigraçao no norte de Minas Gerais- Brasil

This proposal assumes that the migration process is a socio-spatial process. Where desires, goals, fears and hopes of migrating become identities, social constructs that ultimately lead to ways of belonging. Place is a form of interaction, whether between man and the environment, or the man with a specific space. Place demand belonging. Belonging demand identity. Migration then became a strategy, a resistance, an eternal possibility or impossibility of staying or leaving. The displacements eventually cause changes in the relationships and interactions of individuals in their most different spaces. In this sense, they grasp the shifting process of an individual or social group, it is seen that migration and immigration is a process beyond "of being in different social spaces", is a mode of social reproduction defined in relations of time and space, emphasizing the duality of being in motion. Therefore, this proposal seeks to emphasize the dynamics of migration and immigration process in their contexts, as well as highlight the economic social constructions arising from these proceedings, in its social, cultural, political and, thus characterizing the various identities of individuals

A Importância do Programa de Aquisição de Alimentos (PAA) nos territórios da cidadania dos Estados de Minas Gerais e da Bahia : Criação de novos mercados a partir da visão dos Agentes de Assistência Técnica e Extensão Rural (ATER)

This article aims to identify how the Foodstuff Acquisition Program has influenced market creation for family farmers in two Brazilian states - Minas Gerais e Bahia and also the limitations and benefits of the program from the point of view of the extension agents. A bibliographic research and a quantitative exploratory study were conducted, questionnaires were sent to extension agents who work for public rural extension agencies, municipalities, NGOs, cooperatives and producers' associations, during the year 2010-2011.

XIIº Congreso de la Federación Internacional de Asociaciones de Estudios Clásicos (FIEC). Ouro Preto, Minas Gerais, Brasil. 23 al 28 de agosto de 2004

Fil: Buisel, María Delia. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Associaçoes comunitárias do meio rural : Um estudo de caso no centro oeste de Minas Gerais

This paper examines the association in a rural mining town in Brazil. The results belong to a master dissertationin Rural Extension on membership organizations and public policies for rural areas aiming to identify the roles performed by membership organizations, the reasons that explained their formation and their relationship with policy making for rural areas in the case studied. It is a case study, for which interviews were conducted with representatives of the organizations in order to deepen into the issues related to their historical, the roles they play and how and whether they participate in development project proposals. The results revealed anup-down process of formation of rural organizations, being created as bargaining tools for achieving collective benefits, reproducing dependency relationships

Associaçoes comunitárias do meio rural : Um estudo de caso no centro oeste de Minas Gerais

This paper examines the association in a rural mining town in Brazil. The results belong to a master dissertationin Rural Extension on membership organizations and public policies for rural areas aiming to identify the roles performed by membership organizations, the reasons that explained their formation and their relationship with policy making for rural areas in the case studied. It is a case study, for which interviews were conducted with representatives of the organizations in order to deepen into the issues related to their historical, the roles they play and how and whether they participate in development project proposals. The results revealed anup-down process of formation of rural organizations, being created as bargaining tools for achieving collective benefits, reproducing dependency relationships

A Importância do Programa de Aquisição de Alimentos (PAA) nos territórios da cidadania dos Estados de Minas Gerais e da Bahia : Criação de novos mercados a partir da visão dos Agentes de Assistência Técnica e Extensão Rural (ATER)

This article aims to identify how the Foodstuff Acquisition Program has influenced market creation for family farmers in two Brazilian states - Minas Gerais e Bahia and also the limitations and benefits of the program from the point of view of the extension agents. A bibliographic research and a quantitative exploratory study were conducted, questionnaires were sent to extension agents who work for public rural extension agencies, municipalities, NGOs, cooperatives and producers' associations, during the year 2010-2011.

XIIº Congreso de la Federación Internacional de Asociaciones de Estudios Clásicos (FIEC). Ouro Preto, Minas Gerais, Brasil. 23 al 28 de agosto de 2004

Fil: Buisel, María Delia. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.