Chemical Abundances
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. Influence of Seasonality and Sunlight Effects on Rollinia mucosa Leaves Fingerprint
Rollinia mucosa fruit has generated great interest due to the presence of bioactive compounds, which exhibit promising biological activities. Fingerprinting analytical techniques, chromatographic-diode array detection (DAD), infrared, mass spectrometric, 1H and 13C nuclear magnetic resonance (NMR) spectra, associated with chemometric analysis and mixture des
J. Braz. Chem. Soc.. Publicado em: 08/04/2019
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2. Changes in the taxonomic structure of periphytic algae on a free-floating macrophyte (Utricularia foliosa L.) in relation to macrophyte richness over seasons
ABSTRACT Periphyton has a strong relationship with aquatic macrophytes, which are key components of spatial heterogeneity in the littoral zone. We evaluated the relationship between the community structure of periphytic algae on Utricularia foliosa and macrophyte richness and coverage and limnological variables in a shallow reservoir. Water sampling for phys
Acta Bot. Bras.. Publicado em: 30/07/2018
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3. SOIL MESO- AND MACROFAUNA IN TWO SOYBEAN CROPS AFTER SWINE WASTEWATER APPLICATION
ABSTRACT Hog raising generates a large amount of residues that is commonly discarded into the soil as fertilizer even with environmental risks. In this context, the aim of this study was to assess the application effects of different doses of swine wastewater (SW) associated with mineral fertilization on the abundance and diversity of organisms of soil meso-
Eng. Agríc.. Publicado em: 2017-06
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4. Populações e evolução do bojo e região central da Galáxia / Populations and the evolution of the bulge and central region of the Galaxy
O presente trabalho propõe uma abordagem abrangente para descrever a evolução da região central da Via Láctea, compreendendo-se aí o bojo, a barra e as interfaces dos mesmos com o limite interno do disco e com a região central do halo. Pretende-se investigar as propriedades químicas e cinemáticas destas estruturas, que são interconectadas, com o ob
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/05/2012
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5. Formação e evolução de galáxias: populações estelares na Via Láctea, galáxias elípticas e propriedades de galáxias em grupos / Galaxy Formation and Evolution: From the Milky Way to Galaxies in Groups
Understanding the way galaxies form and evolve throughout the cosmic time remains one of the greatest challenges of modern cosmology. Several processes are known to play a role in the formation of galaxies, such as feedback from supernovae and active galactic nuclei, chemical and dynamical evolution and environmental effects. This thesis encompasses these pr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/03/2012
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6. Search for very metal-poor stars based on carbon over-abundance / Busca por estrelas muito pobres em metais baseada no enriquecimento em carbono
The main goal of this work is to show that is possible to search for metal-poor stars based on the premise that a large fraction of these will be carbon-rich. This hypothesis had not yet been verified because many of the so-called CEMP (Carbon Enhanced Metal-Poor) stars were neglected in previous studies due to the design of the search for metal-poor stars w
Publicado em: 2010
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7. Ictioplâncton na Unidade de Conservação Reserva Biológica Marinha do Arvoredo e Áreas Costeiras Adjacentes, Santa Catarina, Brasil
Arvoredo Island (Santa Catarina, Brazil) and its surrounding area were defined as Conservation Unit (CU) in the category of Biological Reserve in 1990. Biological Reserves are protected areas that have complete and permanent preservation of local flora and fauna, thus contributing to the increase of abundance and diversity of species. This research aimed at
Publicado em: 2009
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8. Petrogenese do granodiorito Fazenda Gavião : registro de uma colisão arco-continente no greenstone belt do Rio Itapicuru, Craton do São Francisco, Bahia / Petrogenesis of the Fazenda Gavião granodiorite : a record of an arc-continent collision in the Rio Itapicuru greenstone belt, São Francisco Craton, Bahia
The Rio Itapicuru greenstone belt is a gold-bearing Palaeoproterozoic volcanic-sedimentary sequence intruded by several granitic plutons in the time interval 2160-2070 Ma. The Fazenda Gavião granodiorite (FGG) is one of a set of plutons emplaced along the western boundary of the greenstone belt with the Archaean basement complex. The FGG is largely composed
Publicado em: 2008
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9. VARIAÇÃO TEMPORAL DA ICTIOFAUNA EM IGARAPÉS DE TERRA-FIRME, RESERVA DUCKE, MANAUS, AMAZONAS.
Temporal variability of fish assemblages between different season along one year and their relationship with environmental factors was investigated in 31 first and second order streams in terra-firme rainforest of Reserva Florestal Adolpho Ducke, in Central Amazonia. Fish were caught with hand and seine nets and stream volume and physical-chemical variables
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/05/2007
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10. The role of local and global strangeness neutrality at the inhomogeneous freeze-out in relativistic heavy ion collisions
The decoupling surface in relativistic heavy-ion collisions may not be homogeneous. Rather, inhomogeneities should form when a rapid transition from high to low entropy density occurs. We analyze the hadron "chemistry" from high-energy heavy-ion reactions for the presence of such density inhomogeneities. We show that due to the non-linear dependence of the p
Brazilian Journal of Physics. Publicado em: 2007-09
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11. Inhomogeneities in the freeze-out of relativistic heavy-ion collisions
An inhomogeneous decoupling surface of hadrons produced in relativistic heavy-ion collisions may occur, if the expanding hot and dense matter passes through a first order phase transition. We show that due to the non-linear dependence of the particle densities on the temperature and baryon-chemical potential such inhomogeneities should be visible even in the
Braz. J. Phys.. Publicado em: 2007-06
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12. Role of global and local strangeness neutrality in an inhomogeneous freeze-out approach to relativistic heavy ion collisions
An inhomogeneous decoupling surface of hadrons produced in relativistic heavy-ion collisions may occur, if the expanding hot and dense matter passes through a first order phase transition. We show that due to the non-linear dependence of the particle densities on the temperature and baryon-chemical potential such inhomogeneities should be visible even in the
Brazilian Journal of Physics. Publicado em: 2007-03