Forest Covering
Mostrando 37-47 de 47 artigos, teses e dissertações.
-
37. Evaluation of the stock and isotopic composition of carbon in the soil of Acre. / Avaliação do estoque e composição isotópica do carbono do solo no Acre.
The State of Acre is located in the extreme west of Brazil, occupying an area that had great geological influence from the mountain chain of Andes. The soils present pedologic characteristics very different from the ones found in the remaining of Brazilian Amazon, prevailing Inceptisols, Alfisols, and Ultisols, generally eutrophic, young and little weathered
Publicado em: 2004
-
38. Estimativa dos componentes do balanço radiativo à superfície mediante satélites meteorológicos / Estimation of components the budget radiation surface by using meteorological satellites
The budget between incoming radiation surface and outgoing is called Budget Radiation Surface (BRS). Conventional methods of measure of this budget are prompt and therefore representative of small areas, while that the meteorological satellites allow to all have a regular covering of the globe. This thesis has as objective basic to analyze methods of estimat
Publicado em: 2004
-
39. Genetic differentiation in geographically close populations of the water rat Nectomys squamipes (Rodentia, Sigmodontinae) from the Brazilian Atlantic Forest
We examined the genetic structure and the effects of a bottleneck in populations of the water rat Nectomys squamipes, a primary host of Schistosoma mansoni. Eight microsatellite loci were studied in 7 populations from the Sumidouro region of the Brazilian state of Rio de Janeiro. Our data, covering a four-year period during which a bottleneck occurred, revea
Genetics and Molecular Biology. Publicado em: 2003-12
-
40. ContribuiÃÃo ao processo de regionalizaÃÃo de vazÃes : AnÃlise de mÃtodos e variÃveis explicativas
The objectives of this work were contribute to the process of hydrologic regionalization in areas with scarce data by means of new explanatory variables, as well as to analyze different methods of regionalization. Initially, an analysis of the influence of the vegetable covering was accomplished in the process of regionalization in the study area. In the cas
Publicado em: 2003
-
41. GEOPROCESAMIENTO APLICADO AL ANALISIS DEL USO DE LA TIERRA EN EL MUNICIPIO DE SAN PEDRO DE YCUAMANDYYÚ, PARAGUAY
ABSTRACT San Pedro of Ycuamandyyú is located in the northwest of the oriental region of Paraguay. The objectives of this work were the elaboration and the analysis of the map of the land use for the planning of forest activities in the place, for which were used techniques of cartography, remote sensing and (GIS) Geographical Information’s Systems, that f
Ciênc. Florest.. Publicado em: 2002-12
-
42. Evolution of the land use in portion of the occidental Amazon (Acre), with use of changes detention technique / Evolução do uso da terra em porção da Amazônia ocidental (Acre), com uso de técnicas de detecção de mudanças
The Brazilian Amazon has been objective of activities that are transforming extensive areas of humid tropical forest in areas destined to the agriculture and pastures, contributing to the alteration of the atmosphere and of the Amazon landscape. Starting from the decade of 60, the state of Acre, started to suffer great pressure through the migration and peop
Publicado em: 2001
-
43. Camada limite Amazonia: aspectos observacionais e de modelagem / Amazonian Boundary Layer: Numerical and observational aspects
The purpose of this work was to develop software to obtain Vegetation Index products for South America through images of the NOAA polar orbiting satellites, using the SITIM image processing equipment. Input data are the AVHRR sensor imagens in the visible (0.58 - 0.68 ) and near-infrared (0.72 - 1.1 ) spectral bands with 1.1 km spatial resolution reveived by
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/12/1995
-
44. Camada limite Amazonia: aspectos observacionais e de modelagem / Amazonian Boundary Layer: Numerical and observational aspects
The purpose of this work was to develop software to obtain Vegetation Index products for South America through images of the NOAA polar orbiting satellites, using the SITIM image processing equipment. Input data are the AVHRR sensor imagens in the visible (0.58 - 0.68 ) and near-infrared (0.72 - 1.1 ) spectral bands with 1.1 km spatial resolution reveived by
Publicado em: 1995
-
45. Avaliacao de dados aerogamaespectrometricos e de sua integracao com imagens digitais TM/Landsat 5, no mapeamento geologico na Serra dos Carajas (PA) / Evaluation of aerogammaspectrometric data and their integration with Landst-TM digital images for geological mapping in the Serra dos Carajas (PA)
Two test-sites, covering the Serra dos Carajás sheet (56,5 x 56,5 kin) and the Pojuca belt (15,4 x 15,4 kin) were selected for geological investigation. Gammaspectrometric airborne data (eU, eTh, Total Count and eU/eTh) were acquired over part of the Serra dos Carajfis Mineral Province (Brazilian Amazon Region) during the 1975 and 1976 (PGBC - Brazil-Canada
Publicado em: 1994
-
46. Improvements in and Environmental Applications of Double-Vial Radiorespirometry for the Study of Microbial Mineralization
Several variations in the scintillation mixture and the filter paper arrangements for double-vial radiorespirometry were compared. Improved efficiencies (44%) and shorter response times were found by adding wetting agents and methanolic NaOH to the scintillation mixture in the filter paper. The scintillation chemicals used did not contain dioxane and were fo
-
47. Genetic Linkage Maps of Eucalyptus Grandis and Eucalyptus Urophylla Using a Pseudo-Testcross: Mapping Strategy and Rapd Markers
We have used a ``two-way pseudo-testcross'' mapping strategy in combination with the random amplified polymorhic DNA (RAPD) assay to construct two moderate density genetic linkage maps for species of Eucalyptus. In the cross between two heterozygous individuals many single-dose RAPD markers will be heterozygous in one parent, null in the other and therefore