Análise do processo de ocupação e uso atual do solo da bacia hidrográfica do Rio Vermelho (GO) utilizando imagens LANDSAT 5 TM

This article discusses the current land use in the Rio Vermelho basin, located in the western state of Goias. For this, a land use map was elaborated based on LANDSAT TM 5 from august 2008 through the unsupervised classification, software ArcGis 9.3, extension "Spatial Analyst Tools - Maximum Likelihood Classification". This classification allowed the identification of seven classes: pasture, vegetation, agriculture, pivots, water, urban area and sand banks. These classes received correction vector through the visual interpretation and area calculation on extension X-Tools, software ArcGis 9.3. The detection of historical changes in land use through remote sensing helps in understanding the historical process of occupation of the basin, which has witnessed over the last decades a strong expansion of pasture on vegetation areas. Over 65% of the basin is occupied by pastures. Inserted in the Araguaia Depression, the Rio Vermelho basin presents very favorable natural conditions to cattle breeding, with lowlands, long interfluves, water abundance, hot and humid climate, soils with reasonable fertility. Historically, the arrival of ranchers from the south and southeastern Brazil in the years '50s and '60s marked the transition from cattle loose to a semi-extensive livestock better organized, characterizing the formation of large livestock farms as the main vector of regional occupation. From 1980 begins to outline the transformation of typical farms in agribusiness companies. Thus, the economic gains in this region were evident, but accompanied by deforestation, erosion, soil compaction, damage to streams and rivers.Pages: 6719-672

Compartimentação geomorfológica da bacia hidrográfica do Rio Vermelho (GO) utilizando imagens ASTER

This paper describes the use of ASTERs elevation models for the geomorphological partitioning of the Rio Vermelho basin, the western state of Goias. For this, the ASTER images related to the study area were downloaded from the NASAs web address, mosaicked, reprojected to UTM, to enable the automatic extraction of the limit of the basin in the software ArcGIS 9.3. Cropped the image, a topographic profile was drawn up in the extension 3D Analyst, Surface Analysis, Arcgis 9.3, for the main channel of the Rio Vermelho through its vectorization, to distinguish three sections of relief represented by depression, the contact zone and plateau, called in this article of low, middle and upper basin of the Rio Vermelho. For each section of the basin was prepared a profile, allowing analysis of lithological influence on the modeled strands and drainage in each compartment. The topographic profile allows the visualization of terrain profile and its relationship with the slope, elevation and length of the main river. The watershed is the natural unit of work in geomorphology, and functions as basic level scale, allowing us to understand the spatial-temporal variations of the morphogenic processes driven by the flattening of the relief. Thus, the advent of Digital Elevation Models (DEM) represented a great leap in geomorphological studies, because its allows the calculation of topographic variables quickly.Pages: 8231-823

Staphylococcal scalded skin syndrome in a premature newborn caused by methicillin-resistant Staphylococcus aureus: case report

CONTEXT: Staphylococcal scalded skin syndrome is an exfoliative skin disease. Reports of this syndrome in newborns caused by methicillin-resistant Staphylococcus aureus are rare but, when present, rapid diagnosis and treatment is required in order to decrease morbidity and mortality. CASE REPORT: A premature newly born girl weighing 1,520 g, born with a gestational age of 29 weeks and 4 days, developed staphylococcal scalded skin syndrome on the fifth day of life. Cultures on blood samples collected on the first and fourth days were negative, but Pseudomonas aeruginosa and Enterococcus sp. (vancomycin-sensitive) developed in blood cultures performed on the day of death (seventh day), and Pseudomonas aeruginosa and Serratia marcescens were identified in cultures on nasopharyngeal, buttock and abdominal secretions. In addition to these two Gram-negative bacilli, methicillin-resistant Staphylococcus aureus was isolated in a culture on the umbilical stump (seventh day). The diagnosis of staphylococcal scalded skin syndrome was based on clinical criteria