Levantamento estrutural da porção norte do Greenstone Belt do rio Itapicuru e dos Alvos Encantado e C1W, Bahia

The study area is located in the geological context of the northern portion of the Rio Itapicuru Greenstone Belt (GBRI), located northeast of the São Francisco Craton, Bahia State. The GBRI is known for its great economic potential for gold mineralization, looking south at Fazenda Brasileiro Mine and North Mine Maria Preta, is situated in the study área. The structural pattern of the northern portion of the Greenstone, theme of this work, is of great importance to understand the mineralization present. To characterize the structural model three geologic sections (scale 1:25000) were made with NW-SE and EW directions and detailing two mineralized targets, Encantado, located northwest of the area, near the city of Nordestina, and C1W, located near Itapicuru River, west of the Maria Preta mine. Thus, field work and petrographic analysis were conducted, that allow to indicate the existence of two structural domains characterized by the existence of a main foliation, low angle dipping main foliation and another with high dip angle, both with NW, moreover, folds occur in the area Dn-1 and post-Dn folds. Dn-1 folds are observed less frequently but they occur mainly forming an oblique foliation and the Sn is present in porphyroblasts observed in petrographic analysis, whereas in relation to the folds post Dn, there are more than one type of folding in area, which differ by the orientation of their axis, a post Dn NS and EW Dn another post. Moreover, two areas of metamorphic green schist (biotite zone) and medium amphibolite, which are directly related to the structural domains found

Caracterização mineralógica, petrológica e química da sulfetação nos reef's da mina Canavieiras, Jacobina, Bahia

In the Serra de Jacobina, localized in the North Central portion of the state of Bahia, occours the Jacobina Group. It’s a sedimentary basin and the gold deposit is stocked on the basal portion, which consist on quartzites intercalated with oligomítico metaconglomerates of Serra do Córrego Formation. There are controversies about the origin of the gold mineralization, but the currently most accepted hypothesis corresponds to a paleoplacer deposit with subsequent ore remobilization and concentration by hydrothermal process. The sulphidation is one of the main results of hydrothermal process, which was more detail characterized, besides identifying if there was more than one sulfides phase generation and its relationship with gold mineralization. The analyzes were performed from the main reef's (metaconglomerates mineralized levels) of Mine Canavieiras: Maneira, Holandez, Liberino, Piritoso, MU and LU. Chemical analyzes semi-quantitative were developed with EDS in MEV and also petrographics analyses. The main sulfide is pyrite, followed by chalcopyrite. Six groups of pyrite were classified according with chemical composition, however they show similarities in their habit and occurrence. Were identified four types of chlorite, labeled A, B, C, D. Gold occurs in free form, associate to pyrites, to Fe-Ti-Muscovite, to chlorite type B and to microfractures with iron hydroxide. Gold presents three different compositions: pure, with Ag or associated with U-Zr. The results of chemical analysis showed that the hydrothermal process have as their main source, ultramafic rocks present in the Jacobina Basin

Caracterização epidemiológica de brucelose e leptospirose de pequenos ruminantes dos estados do Sergipe, Bahia, Ceará e Paraíba

Pós-graduação em Medicina Veterinária - FCAV

Phytoseiidae (Acari: Mesostigmata) from rubber tree crops in the State of Bahia, Brazil, with description of two new species

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

A new species of Tupiperla Froehlich, 1969 (Plecoptera: Gripopterygidae) from Serra da Jiboia, Bahia, Brazil

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O transporte ferroviário no nordeste brasileiro e o potencial de desenvolvimento do sudoeste do Estado do Piauí

Pós-graduação em Geografia - IGCE

Trabalho e Educação: (des) emprego na Bahia

The article argues about the problematic of the technological modernization of the productive system, from years 80 and intensified in the 90, and its effect on the behavior of the labor market based in the state of the Bahia. From the few Demographic data of Census 2000 by the IBGE an analysis of the Bahia state force of work was affected mainly on the variable as employment, wage profit, race, sort and years of studies. The data show, among others questions, a labor market with a low-level of education and low wages with strong exclusion in relation to the race and sort.

Políticas de formação docente na Bahia:uma anállise a partir de pressupostos da Teoria Social de Habermas

Num contexto de mudanças amplas e céleres nos mundos do trabalho e da cultura, como se situam os professores frente às normas que regulam sua formação? Ao discutirmos esta questão, propomo-nos a colaborar com os debates sobre as políticas públicas, especialmente aquelas diretamente relacionadas à formação de professores de Ciências que atuam em determinada região no interior da Bahia, desvelando fatores que constrangem ou impedem a ação dos professores na configuração dessas políticas e apontando para outras possibilidades de formação docente. Para tanto, utilizamo-nos de dados de pesquisas acadêmicas, documentos, legislação e entrevistas realizadas com 15 docentes. Para a análise, apoiamo-nos em referenciais críticos, particularmente na teoria social de Habermas. Foi possível relevar a ausência do Estado em determinados aspectos da formação desses profissionais, bem como sua presença incisiva e sufocante em outros. A participação restrita dos docentes, como grupo afetado, na produção das políticas de formação demonstra que a integração social não tem se fundamentado na comunicação, mas em processos não linguísticos, principalmente por meio do poder estatal que abriga os ditames do sistema econômico. Finalizamos o texto, chamando a atenção para as possibilidades apresentadas pelo conceito de esfera pública para o apontamento de novas possibilidades formativas.

Infraestrutura Urbana e Desigualdade Socioespacial na Cidade de Salvador - Bahia

Pós-graduação em Geografia - IGCE

Infraestrutura Urbana e Desigualdade Socioespacial na Cidade de Salvador - Bahia

Pós-graduação em Geografia - IGCE

A new dwarf species of Proceratophrys Miranda-Ribeiro, 1920 (Anura, Cycloramphidae) from the highlands of Chapada Diamantina, Bahia, Brazil

A new species of Proceratophrys is described from the highlands of northeastern Brazil. Molecular and morphological data suggests that Proceratophrys redacta sp. nov. is sister to P. minuta, and related to P. schirchi and P. cristiceps. The new species is diagnosed by its small size, absence of rostral and palpebral appendages, sagittal ridges interrupted, absence of postocular swellings, snout vertical in profile and dorsal coloration lacking distinct ocelli. The new species represents another example of endemism for the genus Proceratophrys in Chapada Diamantina region, and of another appendageless small-sized species associated with highlands. The phylogenetic results indicate that current morphological groupings in Proceratophrys may not represent natural groups.

Activity, movement and secretive behavior of a threatened arboreal folivore, the thin-spined porcupine, in the Atlantic forest of southern Bahia, Brazil

Activity and behavior patterns are important components of a given species ecological strategy, as they have profound implications for its survival and reproduction. Here, we studied the activities, movements and secretive behavior of the thin-spined porcupine Chaetomys subspinosus (Rodentia: Erethizontidae), a threatened arboreal folivore in the Brazilian Atlantic rainforest. We aimed to ascertain the behavioral strategies used by this species as well as its responses to seasonal and daily climatic changes. Four radio-collared individuals were followed continuously for 72-h in the summer and winter, as well as during 146 half-night sessions conducted from April 2005 to September 2006 in forest remnants in southern Bahia. The thin-spined porcupines were nocturnally active (17:30-05:40 h), with peaks in activity and movement from 19:00 to 20:00 h and 03:00 to 04:00 h. Animals followed a circadian rhythm of activity during both the summer and winter. During the diel cycle, porcupines spent 74% of their time resting, 14% feeding, 11% traveling and 2% performing other activities. Distance traveled during the diel cycle averaged 277.5 +/- 117.9 m sd. The mean movement rate during the night was 21.6 +/- 30.1 m/h sd. No significant changes in activity budget or daily distance traveled were observed between seasons, most likely in response to the low fluctuations in climatic conditions and food availability throughout the year in the study region. However, rainfall reduced the time that the animals spent on feeding activities and explained day-to-day differences in activity budgets. We also provide details about intraspecific interactions and defecation behavior. Our observations confirmed that thin-spined porcupines, similar to other folivorous species, present low activity levels and short daily movements, and have adopted various cryptic habits, such as nocturnality, a solitary lifestyle, the tendency to leave offspring alone most of the time and defecation in concealed latrines.