Efeito do turno de coleta sobre comunidades de formigas epigéicas (Hymenoptera: Formicidae) em áreas de Eucalyptus cloeziana e de cerrado

This study aimed at evaluating the effect of collect time (day and night) on ant fauna attracted to baits in areas of Eucalyptus cloeziana (Myrtaceae) and cerrado. The ants were collected in Fazenda Boa Vista, Mannesmann Fi-El Florestal Ltda, Paineiras, Minas Gerais State. Eigthteen sample units were collected: 12 in E. cloezina and six in cerrado. Each sample unit consisted of three plots (25 x 35 m each). The plot consisted of 34 baits distributed in a grid pattern at 5 m intervals. The sampling was carried out in the diurnal and nocturnal period. The results obtained revealed that both type of vegetation (cerrado x Eucalyptus) and the collect time (day x night) had a significative influence on the epigaeic ant fauna. The ordination (DCA) indicated that collect time effect was more important to fauna structuration than the vegetation effect. Brachymyrmex sp.1, Brachymyrmex sp.2, Camponotus crassus Mayr, Camponotus rufipes (Fabricius), Cephalotes pusillus (Klug) and Ectatomma brunneum Smith were indicator species of nocturnal period, and Camponotus renggeri Emery, Camponotus atriceps (Smith), Camponotus melanoticus Emery and Paratrechina sp.1 were indicators of nocturnal period.

O grotesco em Machado de Assis: uma leitura de a causa secreta

A la première partie de ce travail -Grotesque, littérature, lecteur - on a discuté le concept de grotesque, configuré en termes littéraires, de pins ses articulations avec la fictionalité et la réception. A la seconde partie - Le lecteur et le grotesque dans I' A causa secreta - on a fait la lecture du comte Machadien au point de une d'un texte ou le grotesque, moyen de la structuration du comte, se trouve configuré en termes fictionels.

Do novo sindicalismo à concertação social: ascensão (e crise) do sindicalismo no Brasil (1978-1998)

La trajectoire du syndicalisme au Brésil de 1978 à 1998 se présente comme un passage, sur le plan de la stratégie syndicale, de la confrontation à la coopération conflictuelle, ou encore, de la lutte des classes dans la production vers une «convergence antagonique», ou un syndicalisme de participation ou de «concertation sociale», qui s'avère précisement un défensivisme nouveau, d'apparence néo-corporative. Ce que nous cherchons à caractériser ici est l'importance progressive dans la pratique syndicaliste prépondérante de la CUT dans les années 90 du nouveau corporatisme ouvrier, qui a tendance à affaiblir la perspective de classe qui a caractérisé la lutte politique et syndicale au Brésil dans les années 80.

Genetic variability in natural populations of Zeyheria montana mart. from the Brazilian Cerrado

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

Características histoquímicas e estruturais do testículo do morcego hematófago (Desmodus rotundus rotundus, Geoffrey, 1810).

The testicular stroma of the vampire bat including the testicular capsula and the lamina propria of the seminiferous tubuli, was strongly PAS-positive. This observation was a possible indication of great amounts of structural glycogen and other glycoconjugates at the level of smooth muscle cells; elongated contractile cells and/or collagen frameworks of the tunica albuginea and tubular lamina propria. In the last the basement membranes of the seminiferous tubules were particularly strongly PAS positive, as an indication of their neutral mucosubstances structural composition, previously described (Malmi et al., 1987). The epithelium lining from the cavitary and surface rete testis complex showed low reactivities to mucosubstances; total proteins and lipids and oxidative enzymes studied. Although the apical granulation at the rete testis epithelium showed an intense PAS reactivity with hypothesis of glycoprotein secretion, through the rete. The PAS, Sudan Black B, NADH, MDH and LDH reactions of the testicular interstitium seem correlate to steroid metabolism (biosynthesis and secretion), at the Leydig cells level. The seminiferous epithelium generally had low reactions to all the histochemical studies realized. Particularly in the adbasal compartment the histochemical localizations of NADH diaphorase and LDH were possible related to glycolytic activities and general carbohydrates metabolism, both enzymes, and hydrogen transport, the NADH. The strong PAS, diastase and PAS, and alcian blue pH 2.5 and PAS reactions observed in the adluminal seminiferous epithelium compartment were directly related to the spermatids acrosomal glycoconjugates structuration. Also the SDH localization at this level seems to be related to the mitochondrial activities at the middle piece level in the late spermatids.

Modifications induced by acetylacetone in properties of sol-gel derived Y3Al5O12:Tb3+ - I: Structural and morphological organizations

Acetylacetone has been used as a chemical modifier for the synthesis of undoped and Tb3+-doped Y3Al5O12 powders. A systematic investigation concerning its influence on the structural and morphological properties of amorphous and crystallized samples has been carried out. These properties have been comparatively studied by means of X-ray diffraction, infrared spectroscopy, SEM, XAS and SAXS. 27Al NMR and EPR experiments have been performed to complete the study. The combined results have evidenced that acetylacetone promotes organic groups departure during calcination, entailing a better structural organization at lower temperatures compared with unmodified powders. Structuration has been proven to occur at short-scale range until a 600°C heating treatment before being extended by coalescence at higher temperatures. Finally, the presence of acac ligands on the alkoxides leads to a monomer-cluster aggregation process, and thus to a more open network. © 2010 The Royal Society of Chemistry.

Análise, desenvolvimento e implantação de software para monitorização, controle e gerenciamento dos processos na condução de estudos clínicos em cancerologia

Pós-graduação em Pesquisa e Desenvolvimento (Biotecnologia Médica) - FMB

Poliuretana contendo corante azóico e espaçador tipo bis-carbonato como material para fabricação de filmes nanoestruturados

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação do efeito do praziquantel veiculado em dispersões lipídicas no tratamento de camundongos infectados com schistosoma mansoni

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O esquema de ação e a constituição do sujeito epistêmico: contribuições da epistemologia genética à teoria do conhecimento

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Sobre o uso da função proposicional e sua gênese segundo a epistemologia genética

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

Avaliação das habilidades psicomotoras relacionadas à estruturação espaço-temporal em crianças com 6 anos completos, matriculadas em EMEIS de Promissão-SP, com e sem frequência à creche

Pós-graduação em Pediatria - FMB

Atividade microbiana e diversidade de fungos micorrízicos arbusculares em espécies arbóreas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Pequenas centrais hidrelétricas face à reestruturação do setor elétrico brasileiro: uma questão de políticas públicas

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Estágio supervisionado: prática simbólica e experiência inaugural da docência

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)