Andean streams drain metal-rich bedrock and are subjected to an extreme altitude gradient, which may create highly selective conditions for life. The aim of the present study was to evaluate the combined effects of metals ...

Andean streams drain metal-rich bedrock and are subjected to an extreme altitude gradient, which may create highly selective conditions for life. The aim of the present study was to evaluate the combined effects of metals ...

The data reported in this paper are among the first relating to the microbiology of hyper-arid, very high altitude deserts and they provide base line information on the structure of actinobacterial communities. The high ...

The prevalence of intestinal parasitic infections among schoolchildren in Colalao del Valle, a high-altitude community in Tucumán province, Argentina, was investigated. The data revealed a high prevalence of parasitism ...

Records of extreme altitudes where several coccinellid species from South America inhabit the Andes of Argentina, Bolivia, Chile, Colombia, Ecuador, and Peru are provided. After an intensive review of several entomological ...

Hot alkali chloride fluids ascend from deep geothermal reservoirs and discharge at the surface as hot springs. As the silica-rich fluid discharges and cools to below 100°C, the silica carried in solution precipitates and ...

Objective: The purpose of this study was to determine the prevalence and severity of dental fluorosis in Mexican adolescents. Materials and Methods: A cross-sectional epidemiological study was carried out in 1,024 adolescents ...

Objective: The purpose of this study was to determine the prevalence and severity of dental fluorosis in Mexican adolescents. Materials and Methods: A cross-sectional epidemiological study was carried out in 1,024 adolescents ...