Results 301 to 310 of about 6,262,155 (317)

CARACTERIZAÇÃO FITOFISIONÔMICA DA RESTINGA DE ALGODOAL MARACANÃ, PARÃ, BRASIL

1995
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Bastos, Maria de Nazaré do Carmo., Rosário, Carlos Silva, Lobato, Luís Carlos Batista   +2 more
openaire   +1 more source

Evaluación de parámetros de avance y rotación para soldadura en aluminio mediante proceso FSW

REVISTA TECNOLOGÍA & DESARROLLO, 2016
El siguiente artículo reporta los resultados de ensayos en tensión de platinas de aluminio AA1050 soldadas a tope mediante el proceso Friction Stir Welding (FSW), para ello se utilizó una fresadora vertical ROMI U-30 de 3Hp de potencia y una herramienta de soldadura (PIN) diseñada en SolidWorks y confeccionada en acero AISI 3115 carburizado. Las
Alexander Vega Anticona, Eddy Quiroz Grados   +1 more
openaire   +1 more source

The Bosque at Pará

1929
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

Determination of total mercury in workers' urine in gold shops of Itaituba, Pará State, Brazil

The Science of The Total Environment, 2000
Gold extraction and its commercialization in the Amazon region is mainly by rudimentary procedures. Therefore, during the process of extraction and recovery of this precious metal, large amounts of mercury vapors are thrown into the environment. This paper is an attempt to establish a correlation between the concentration of total mercury in the urine ...
R, Santa Rosa, R C, Müller, C N, Alves, J E, Sarkis, M H, Bentes, E, Brabo, E S, de Oliveira   +6 more
openaire   +2 more sources