DSpace Communidade:https://repositorio.ufba.br/handle/ufba/5112024-03-19T12:59:30Z2024-03-19T12:59:30ZTwo hundred hectares of good business: Brazilian agriculture in a themed spaceBrandão, Paulo R. B.Christian, Brannstromhttps://repositorio.ufba.br/handle/ri/262712022-08-26T14:02:40Z2012-01-01T00:00:00ZTítulo: Two hundred hectares of good business: Brazilian agriculture in a themed space
Autor(es): Brandão, Paulo R. B.; Christian, Brannstrom
Abstract: Geographers have recognized that trade fairs and other temporary spaces function as centers of knowledge, but we have a weak understanding of how fairs are themed spaces, similar to parades, festivals, and built environments, that produce cultural and political meanings. In this article we analyze the morphology, iconography, and performance of a large agricultural fair in Brazil, the Bahia Farm Show, which produces a regional identity of highly productive, leading-edge, and globally competitive agriculture in a former economic backwater. We discuss the production of themes in terms of power relations, cultural processes, relations with nature, and sociotechnological norms for agriculture. Omissions from the Farm Show indicate tension and accommodation between elites at different geographical scales. Brazil's high-input, high-output agriculture relies in part on the meanings that events such as agricultural fairs sustain and reproduce.
Tipo: Artigo de Periódico2012-01-01T00:00:00ZTheoretical aspects of binary and ternary complexes of aziridine⋯ammonia ruled by hydrogen bond strengthOliveira, Boaz G.Araújo, Regiane C. M. U.https://repositorio.ufba.br/handle/ri/262702022-08-26T14:03:19Z2012-01-01T00:00:00ZTítulo: Theoretical aspects of binary and ternary complexes of aziridine⋯ammonia ruled by hydrogen bond strength
Autor(es): Oliveira, Boaz G.; Araújo, Regiane C. M. U.
Abstract: B3LYP calculations, ChelpG atomic charges, and quantum theory of atoms in molecules (QTAIM) integrations were used to investigate the binary (1:1) and ternary (1:2) hydrogen-bonded complexes formed by aziridine (1) and ammonia (2). In a series of analysis, geometry data, electronic parameters, vibrational oscillators, and topological descriptors were used to evaluate hydrogen bond strength, and additionally to determine the more prominent molecular deformations upon the formation of C2H5N···NH3 (1:1) and C2H5N···2NH3 (1:2) systems. Taking a spectroscopic viewpoint, results obtained from analysis of the harmonic infrared spectrum were examined. From these, new vibrational modes and red- and blue-shifts related to the stretch frequencies of either donors or acceptors of protons were identified. Furthermore, the molecular topology of the electronic density modeled in accord with QTAIM was absolutely critical in defining bond critical points (BCP) and ring critical points (RCP) on the heterocyclic structures. Taking all the results together allowed us to identify and characterize all the N···H hydrogen bonds, as well as the strain ring of the aziridine and its stability.
Tipo: Artigo de Periódico2012-01-01T00:00:00ZDiet of the coati Nasua nasua (Carnivora: Procyonidae) in an area of woodland inserted in an urban environment in BrazilFerreira, Giovanne A.Oliveira, Eduardo NakanoGenaro, GelsonChaves, Adma K. Lacerdahttps://repositorio.ufba.br/handle/ri/262692022-08-26T14:02:53Z2013-01-01T00:00:00ZTítulo: Diet of the coati Nasua nasua (Carnivora: Procyonidae) in an area of woodland inserted in an urban environment in Brazil
Autor(es): Ferreira, Giovanne A.; Oliveira, Eduardo Nakano; Genaro, Gelson; Chaves, Adma K. Lacerda
Abstract: Coatis are omnivores whose diet consists of small vertebrates, invertebrates, and fruit. In urban areas, they may ingest food waste that has been discarded in deposits near their habitat, or they may consume food offered by humans. The present work investigates the diet of coatis through analysis of 56 fecal samples collected from Morro Imperador, a fragment of woodland inserted into an urban center in the municipality of Juiz de Fora, State of Minas Gerais, Brazil. The results point to a diet with niche breadth of 0.4 in which the percentage of occurrence of insects (34.9 %) and fruit (19.9 %) comprise the main dietary items. The presence of food due to human action (direct or indirect) is also constant throughout the year (14.1 %), thereby demonstrating the ability of these animals to adapt to modified environments.
Tipo: Artigo de Periódico2013-01-01T00:00:00ZContaminant discharge and uncertainty estimates from passive flux meter measurementsKlammler, HaraldHatfield, KirkLuz, Joana Angélica Guimarães daAnnable, Michael D.Newman, MarkCho, JaehyunPeacock, AaronStucker, Valeriehttps://repositorio.ufba.br/handle/ri/262682022-08-26T14:03:03Z2012-01-01T00:00:00ZTítulo: Contaminant discharge and uncertainty estimates from passive flux meter measurements
Autor(es): Klammler, Harald; Hatfield, Kirk; Luz, Joana Angélica Guimarães da; Annable, Michael D.; Newman, Mark; Cho, Jaehyun; Peacock, Aaron; Stucker, Valerie
Abstract: 1] The passive flux meter (PFM) measures local cumulative water and contaminant fluxes at an observation well. Conditional stochastic simulation accounting for both spatial correlation and data skewness is introduced to interpret passive flux meter observations in terms of probability distributions of discharges across control planes (transects) of wells. An estimator of the effective number of independent data is defined and applied in the development of two significantly simpler approximate methods for estimating discharge distributions. One method uses a transformation of the t statistic to account for data skewness and the other method is closely related to the classic bootstrap. The approaches are demonstrated with passive flux meter data from two field sites (a trichloroethylene [TCE] plume at Ft. Lewis, WA, and a uranium plume at Rifle, CO). All methods require that the flux heterogeneity is sufficiently represented by the data and maximum differences in discharge quantile estimates between methods are ∼7%.
Tipo: Artigo de Periódico2012-01-01T00:00:00Z