Results 91 to 100 of about 1,475,092 (223)

A contribution to the chemical characterization of rivers in the Rio Negro Basin, Brazil

open access: yesJournal of the Brazilian Chemical Society, 2000
Water samples were collected in Middle Amazonia from the Amazon River, Rio Negro and 17 tributaries of Rio Negro. The analyses consisted of pH, conductivity, and dissolved organic (DOC) measurements, as well as plasma source mass spectrometry (ICP-MS ...
Küchler Ivo L.   +2 more
doaj  

Morphological, cytochemical and ultrastructural aspects of blood cells in freshwater stingray species in the middle Rio Negro basin of Amazonian Brazil. [PDF]

open access: yesSci Rep, 2021
de Oliveira AT   +7 more
europepmc   +1 more source

Characteristics of organic matter in the mixing zone of the Rio Negro and Rio Solimões of the Amazon River

open access: yesHydrological Processes, 2003
AbstractThe nature and distribution of organic matter in the mixing zone of black (Rio Negro) and white (Rio Solimões) waters in the Amazon River was studied to understand the processes responsible for its transport and distribution. Water samples from 13 stations, including Rio Negro, Rio Solimões and Rio Madeira and ten stations downstream of the ...
/Moreira Turcq, Patricia   +3 more
openaire   +2 more sources

EVOLUCIÓN Y SITUACIÓN ACTUAL DE LA FRUTICULTURA EN EL ALTO VALLE.

open access: yesBoletín Geográfico, 1988
El espacio conocido como Alto Valle de Río Negro y Neuquén, se extiende a lo largo de los valles inferiores de los ríos Neuquén y Limay y del valle superior del Río Negro adoptando la forma de una horqueta rescotada.
Elba Kloster
doaj  

Gobernacion del Rio-Negro

open access: yes, 1886
GOBERNACION DEL RIO-NEGRO Atlas de la República Argentina (-) Gobernacion del Rio-Negro (Láma 24) ( -
Ludwig, P., Seelstrang, Arturo
core  

Evolución y situación actual de la fruticultura en el Alto Valle.

open access: yesBoletín Geográfico, 2015
El espacio conocido como Alto Valle de Río Negro y Neuquén, se extiende a lo largo de los valles inferiores de los ríos Neuquén y Limay y del valle superior del Río Negro adoptando la forma de una horqueta rescotada.
Elba Kloster
doaj  

O papel do bibliotecário na preservação cultural: reflexos sobre Santa Isabel do Rio Negro - AM [PDF]

open access: yes
This article is a research and case report on the role of the librarian in the practice of preserving cultural memory. The research was qualitative, and a review of the most recent literature was carried out on the concepts of institutional and cultural ...
Lima, Anunciata Martins
core  

A negritude através de Maria Maria de Milton Nascimento [PDF]

open access: yes, 2003
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão. Programa de Pós-Graduação em Letras/Literatura Brasileira.Esta dissertação é um trabalho de análise do CD Maria Maria de Milton Nascimento, tendo como ...
Silva, Carlos Alberto Silva da
core  

Two new species of the Hypostomus cochliodon group (Siluriformes: Loricariidae) from the rio Negro basin in Brazil

open access: yesNeotropical Ichthyology
Two new species of Hypostomus are described from the middle and upper rio Negro in Brazil. They are assigned to the Hypostomus cochliodon group (sensu Armbruster, 2003) by possessing few spoon-shaped teeth, and dentary angle averaging less than 80º ...
Pedro Hollanda Carvalho   +2 more
doaj   +1 more source

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