Act Pt
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Avaliação de índices de qualidade física do solo sob floresta estacional semidecidual
O conceito de qualidade do solo é muito discutido atualmente em razão das relações do solo com o meio ambiente (solo-planta-atmosfera) e das práticas intervencionistas do homem. Esse conceito relaciona a qualidade com a produtividade agrícola, mas sua avaliação em um contexto agronômico pode ser diferente em ecossistema natural. Este estudo teve com
Rev. Bras. Ciênc. Solo. Publicado em: 2014-04
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2. Contexto e competição na política paulista
This article analyzes the changes in local politics and in political parties' electoral bases in São Paulo since 1985. The study refocuses on the premises of the contextual approach and electoral geography to show that São Paulo politics displays specific territories, and that both socioeconomic structural factors and the dynamics of relations between the
Dados. Publicado em: 2012
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3. Síntese e estudo da atividade eletrocatalítica de óxidos de metais de transição e de nanopartículas de prata e ouro para a reação de redução de oxigênio / Synthesis and study of the electrocatalytic activity of transition metal oxides, and silver and gold nanoparticles for the oxygen reduction reaction
The oxygen reduction reaction (ORR) was studied on electrocatalysts composed by pure and mixed transition metal oxides of Mn, Co, and Ni, including spinel-like structures, and by Ag, Au, and Ag3M/C (M= Au, Pt, Pd e Cu) bimetallic nanoparticles, in alkaline electrolyte. The transition metal oxides were synthesized by thermal decomposition of their nitrates, a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/08/2011
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4. Homogalactanas sulfatadas da macroalga verde Codium isthmocladum: aspectos estruturais e farmacológicos
Galactanas e o termo utilizado para designar polissacarideos que contem galactose. Homogalactanas sulfatadas, SG 1 e SG 2, foram extraidas de macroalga marinha verde Codium isthmocladum apos proteolise, fracionamento por acetona a frio e cromatografia de troca-ionica. A massa molecular foi determinada por cromatografia de gel-filtracao em HPLC e deteccao por
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/01/2011
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5. Ação de polissacarídeos sulfatados de Fucus Vesiculosus na Hemostasia e no sistema complemento
Fucans are a family of sulfated homo and teropolysaccharides respectively, composed mainly of a- (12) and a- (13) linked by L-fucose residues. Properties such as the ability to act as an anti-contraceptive, to reduce cholesterol levels, and to act as an anti-tumor agent are much related. We have focused our attention on the anticoagulant properties, platelet
Publicado em: 2006
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6. AS FACES DO GOVERNO LULA: UM ESTUDO SOCIOLINGÜÍSTICO DO FOGO AMIGO / THE FACES OF THE LULANULLS GOVERNMENT: A SOCIOLINGUISTIC STUDY OF THE FRIENDLY FIRE
Take as my initial point the conceptual group of theories produced according to the face works and the performance of teams, especially, by Goffman (1967 e1985) and Brown and Levinson (1987), with the object of explaining linguistically the criticism identified as Friendly Fire during the Lula´s government. The corpus consists of the principal episodes of f
Publicado em: 2006
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7. O PT e a participação popular : um estudo de caso
The present study analyzes a Brazilian political party, the Workers Party (PT - Partido Trabalhista), and the popular participation in the city of Maringa, state of Parana, between 2001 and 2004, from the perspective of PT representatives elected both for executive and legislative positions and for party positions. Data was collected from three individual in
Publicado em: 2005
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8. Preparação, caracterização e avaliação de catalisadores heterogeneos a base de Pt na hidrogenação enantiosseletiva do piruvato de metila em presença de cinconidina
Platinum based catalysts were prepared by impregnation on different supports, namely C, Al303, TiO2 and La203. The commercial activated carbon was oxidized by different methods in order to modify its surface. The main surface groups identified were carboxylic acid, when HN03 is the oxidizing agent, and carbonyl, phenol and quinone, when the oxidation is made
Publicado em: 2000
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9. Diatom PtCPF1 is a new cryptochrome/photolyase family member with DNA repair and transcription regulation activity
Members of the cryptochrome/photolyase family (CPF) are widely distributed throughout all kingdoms, and encode photosensitive proteins that typically show either photoreceptor or DNA repair activity. Animal and plant cryptochromes have lost DNA repair activity and now perform specialized photoperceptory functions, for example, plant cryptochromes regulate gr
Nature Publishing Group.
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10. The inactivated plasmid inititator protein RepC/RepC* may have a regulatory role.
During replication of the plasmid pT181, the initiator protein RepC is modified by the addition of an oligodeoxynucleotide, giving rise to a new form, RepC*. Here we show that during in vitro replication, RepC* is radioactively labeled, suggesting that the source of the RepC* oligodeoxynucleotide is the newly synthesized pT181 DNA. The RepC/RepC* heterodimer
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11. Arrest of Listeria movement in host cells by a bacterial ActA analogue: implications for actin-based motility.
Upon entering the host cell's cytoplasm, the pathogen Listeria monocytogenes can subvert the normal contractile system of the host cell; subsequent assembly of polar actin-filament structures is likely to provide the force for rapid intracellular bacterial movement and its cell-to-cell spread. We have now investigated the functional consequences of microinje
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12. Assessment of Virulence of Pigeon Isolates of Salmonella enterica subsp. enterica Serovar Typhimurium Variant Copenhagen for Humans
Salmonella enterica serovar Typhimurium variant Copenhagen was isolated from 5 of 152 (3.3%) feral pigeons from the city of Ghent (Belgium) and from 26 pooled fecal samples from 114 pigeon lofts (22.8%). These isolates belonged to phage type (PT) 99. Seven of the pigeon isolates were further compared in vitro to five human variant Copenhagen isolates, 2 isol
American Society for Microbiology.