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Search Results: 1 - 10 of 144580 matches for " FáBIO; "
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Morphometric analysis of the Brasiliorchis picta complex (Orchidaceae)
Pinheiro, Fábio;Barros, Fábio de;
Brazilian Journal of Botany , 2009, DOI: 10.1590/S0100-84042009000100003
Abstract: one of the largest genera of orchidaceae in the neotropics with about 450 species, maxillaria presents several taxonomic uncertainties about its generic circumscription and the delimitation of species groups, mainly due to the large variability of some species. the present study aims at verifying the morphological variation and species delimitation in the brasiliorchis picta complex, a recent new genus derived from maxillaria, using morphometric multivariate analysis. a total of 340 specimens belonging to six species (b. chrysantha (barb. rodr.) r.b. singer, s. koehler & carnevali, b. gracilis (lodd.) r.b. singer, s. koehler & carnevali, b. marginata (lindl.) r.b. singer, s. koehler & carnevali, b. picta (hook.) r. singer, s. koehler & carnevali, b. porphyrostele (rchb. f.) r.b. singer, s. koehler & carnevali and b. ubatubana (hoehne) r.b. singer, s. koehler & carnevali) were analyzed using multivariate methods (pca, cva, da, and cluster analysis with upgma). b. gracilis shows the largest morphological discontinuity, mainly due to its smaller size. the other species tend to form distinct groups, but intermediate characteristics between pairs of species induce overlaps among the individuals of different species and thus confuse the distinction of each one. hybridization and geographic distribution can be involved in the differentiation of the species and lineages in this complex. because the species classified a priori in this work cannot be recognized by the quantitative characters measured here, such other tools as geometric morphometry and molecular data should be employed in future works to clarify species relationships in this complex.
Novas combina??es, novas ocorrências e notas sobre espécies pouco conhecidas, para as orquídeas do Brasil
Barros, Fábio de;
Acta Botanica Brasilica , 1994, DOI: 10.1590/S0102-33061994000100002
Abstract: two new combinations are proposed for brazilian orchids: cyrtopodium polyphyllum (veil.) pabst ex f. barros and pseudolaelia canaanensis (ruschi) f. barros. maxillaria perparva garay & dunsterv. is reported for the first time for brazil. illustration of maxillaria friedrichsthalii rchb. f. and platystele ovalifolia (focke) garay & dunsterv., two species seldom collected in brazil, are given.
Diversidade taxon?mica e distribui??o geográfica das Orchidaceae brasileiras
Barros, Fábio de;
Acta Botanica Brasilica , 1990, DOI: 10.1590/S0102-33061990000100013
Abstract: orchidaceae is one of the largest plant families, and each of its subfamilies have a delimited distribution. the genus laelia, with 7 subsections, 5 of which occuring in brazil, shows interestingly evolutionary characteristics. laelia sect. parviflorae, which occurs mainly in minas gerais (brazil) is an example of "explosive evolution" still in process. the taxonomic treatment of the orchid family is not uniform from taxa to taxa which leads to many small genera in some groups and few large genera in some other groups.
Notas taxon?micas para espécies brasileiras dos gêneros Epidendrum, Platystele, Pleurothallis e Scaphyglottis (Orchidaceae)
Barros, Fábio de;
Acta Botanica Brasilica , 1996, DOI: 10.1590/S0102-33061996000100011
Abstract: one new combination is proposed in the genus epidendrum l.: e. secundum var. albescens (pabst) f. barros; three species are reported for the first time for brazil: platystele stenostachya (rchb. f.) garay, pleurothallis blaisdellii s. wats, and pleurothallis navicularis lindl. hexadesmia cearensis (griseb.) schultes is proposed as a new synonym of scaphyglottis fusiformis (griseb.) schultes. an illustration of epidendrum dichaeoides carnevalli & romero is presented.
Identidade política, desigualdade e partidos brasileiros
Reis, Fábio Wanderley;
Novos Estudos - CEBRAP , 2010, DOI: 10.1590/S0101-33002010000200004
Abstract: the article discusses the process of institutionalization of political parties in brazil in the post-redemocratization period. the advent of the worker's party (pt), and its electoral disputes with the brazilian social democracy party (psdb) point to an ongoing yet unaccomplished process: the emergence, in the orbit of both parties, of stable political-partidary identifications that could lead to a simplified and consolidated party system and the neutralization of the success of the excessively clientelistic and pragmatic orientation that characterizes brazilian democratic movement party's (pmdb) feeble regional roots.
Diálogos com Guillermo O'Donnell
Reis, Fábio Wanderley;
Novos Estudos - CEBRAP , 2012, DOI: 10.1590/S0101-33002012000100010
Abstract: an hommage in the form of a critical reflexion on guillermo o'donnell's (1936-2011) tipology of authoritarian regimes and his analysis of democratic transition and consolidation in countries of recent authoritarian experience.
Medicina, educa??o e gênero: as diferencia??es sexuais do suicídio nos discursos médicos do século XIX
Lopes, Fábio Henrique;
Educar em Revista , 2007, DOI: 10.1590/S0104-40602007000100016
Abstract: by means of this article, constant and repeated sexual differences in xix century medical discourses are analysed, between suicide committed by men and that one comitted by women. i'm seeking the basis used in order to support such difference and questioning the possibility of thinking about the difference between a male and a female gender of committing suicide, standing out, in this normative process, the role attributed to education and its preventive task.
Teorias econ?micas de oferta de educa??o: evolu??o histórica, estado atual e perspectivas
Waltenberg, Fábio D.;
Educa??o e Pesquisa , 2006, DOI: 10.1590/S1517-97022006000100008
Abstract: the present article deals with a particular aspect (the side of the supply) of one of the two main lines of research in the economics of education (economical aspects of educational systems). it shows the historical evolution, the current state, and the perspectives of development of the economic theories of education supply, covering the period from the early 1960s to the more recent contributions. it argues that the traditional theories of the economics of education (human capital and screening) have not dealt adequately with the supply aspect of education. later, the concepts and the instruments of microeconomics of the enterprise were mobilized to try and map out the "technology of production of education". the approach to the functions of production of education initially based just on monetary fluxes was not enough to apprehend all the complexity involved in the process of the supply of education. an analysis of more recent texts reveals three promising paths to the development of the theories of the supply of education: (i) inclusion of non-monetary fluxes into the production functions; (ii) taking into account institutional and organizational aspects of the education system, and (iii) improvement of the econometric techniques for the estimation of the production functions. lastly, the article discusses at more length the first of these paths.
Hérnia discal: procedimentos de tratamento
Negrelli, Wilson Fábio;
Acta Ortopédica Brasileira , 2001, DOI: 10.1590/S1413-78522001000400005
Abstract: the disc herniation is a process where the fibrous ring disrupts, with subsequent central disc mass dislocation. it is considered a extremely common pathology, which causes disability. it is estimated that 2 to 3% of the population have taken with this process whose prevalence is 4.8% in males and 2.5% in female, over 35 years old. environmental causes, posture, muscular imbalance and possibly genetic influence have been considered as risk factors. the conservative therapy has been preferred as the first choice treatment, aiming pain relief, increase of functional capacity and avoidment of disease progression. in this review, it is approached the main methodologies, according to the literature, focusing on drugs prescriptions, orthesis indication, acupunture, rest and a suitable exercise program.
O Estado Imperial e os Pequenos Impérios
Faversani, Fábio;
História (S?o Paulo) , 2007, DOI: 10.1590/S0101-90742007000100005
Abstract: this article aims at analyzing the concept of state and the relationships between society and state in seneca's work.
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