Results 51 to 60 of about 6,627 (195)

Aves, Accipitridae, Spizaetus tyrannus (Wied, 1820): new records in the Quadrilátero Ferrífero region, Minas Gerais, Brazil [PDF]

open access: yesCheck List, 2011
The Black Hawk-Eagle Spizaetus tyrannus (Wied, 1820) is a typical forest raptor classified as an endangered species in the state of Minas Gerais, southeast Brazil. Threats include deforestation and fragmentation of forest areas.
Luiz Salvador-Jr.   +3 more
doaj   +3 more sources

Thermotolerance in Miniature: Heat Resilience of Moss Propagules From Brazilian Ferruginous Rocky Outcrops

open access: yesAustral Ecology, Volume 50, Issue 9, September 2025.
ABSTRACT Harsh environments present substantial challenges to most organisms, making survival and thriving difficult. Such conditions often include extreme temperatures, intense radiation, strong winds, and very low or high humidity levels, resulting in a limited availability of resources like water and nutrients.
Guilherme Freitas Oliveira   +3 more
wiley   +1 more source

Microporosity of BIF hosted massive hematite ore, Iron Quadrangle, Brazil.

open access: yes, 2002
Massive hematite ore (MHO) is a special high-grade iron ore, used as lump ore in the process of obtaining direct reduction iron (DRI). The influence of porosity on the reducibility of MHO from the Capitão do Mato Mine (Iron Quadrangle, Brazil) was ...
A.C. Varajao, César   +3 more
core   +4 more sources

Modeling Iron Ore Breakage with the Tavares Model and DEM Simulation of a Laboratory Jaw Crusher

open access: yesChemical Engineering &Technology, Volume 48, Issue 7, July 2025.
Physical characteristics, DEM contact and Tavares Breakage parameters were measured for an itabirite iron ore. Comparison of experiments in a laboratory jaw crusher to simulations showed good agreement of throughputs, marginal underpredictions of power, while some overpredicted product fineness.
Alan A.A. Tino   +2 more
wiley   +1 more source

Programa Rocha Amiga, Iniciativas para Crianças do Ensino Fundamental no Quadrilátero Ferrífero, Minas Gerais - Brasil [PDF]

open access: yesAnuário do Instituto de Geociências, 2012
O Programa “Rocha Amiga” foi criado em Portugal no âmbito das comemorações do Ano Internacional do Planeta Terra (AIPT), durante o ano letivo de 2007/2008. No Brasil, o Programa está sendo adaptado para a região do Quadrilátero Ferrífero, Minas Gerais,
Úrsula Azevedo Ruchkys   +2 more
doaj  

Mapping of areas suitable for the application of biosolids in the Quadrilátero Ferrífero region, Minas Gerais, Brazil

open access: yesREM: International Engineering Journal, 2022
The recovery of degraded areas is imperative for the sustainability of mining ac-tivities. The main action implemented to improve the chemical, physical and biological conditions of soils, tailings and sterile deposits is the incorporation of organic ...
R. N. Guimarães   +2 more
semanticscholar   +1 more source

Topossequência de solos derivados de mica-xisto-quatzito do grupo itacolomi, quadrilátero ferrífero, MG. [PDF]

open access: yes, 2013
Este estudo objetivou caracterizar as propriedades físicas, químicas e mineralógicas dos solos de uma vertente formados a partir de micaxisto- quartzitos do Grupo Itacolomi, Quadrilátero Ferrífero, MG.
ALMEIDA, E. de P. C.   +5 more
core  

LITOSSEQUÊNCIA DE SOLOS NA SERRA DA MOEDA, QUADRILÁTERO FERRÍFERO

open access: yesGeosciences = Geociências, 2022
O objetivo do trabalho foi estudar os atributos dos solos de uma topolitossequência no flanco oeste da sinclinal Moeda, Quadrilátero Ferrífero, visando contribuir para o entendimento da distribuição dos solos na paisagem, bem como a evolução da ciência ...
Diego dos Santos Oliveira   +5 more
semanticscholar   +1 more source

O PAPEL DA DINÂMICA DO RELEVO NA EVOLUÇÃO DE COURAÇAS NO VALE DO RIO CONCEIÇÃO, QUADRILÁTERO FERRÍFERO – MG

open access: yesRevista Brasileira de Geomorfologia, 2019
Estudos petrológicos utilizando análises macromorfológicas, micromorfológicas, mineralógicas e microquímicas foram realizados para identificar possíveis variações faciológicas de couraças nos distintos níveis deposicionais fluviais do vale da bacia do ...
Wilton Franklin Alves de Figueiredo Filho   +4 more
doaj   +1 more source

Application of Zipf’s law to estimate undiscovered gold endowment in the Quadrilátero Ferrífero Province, Brazil

open access: yesJournal of the Geological Survey of Brazil, 2019
Ore-forming processes act as self-organizing critical systems. These systems exist in an unbalanced nature, such that energy-release can occur as a scale-invariant power-law behavior when a certain threshold is exceeded.
Iago Sousa Lima Costa   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy