Results 1 to 10 of about 921,643 (195)
PÓS-GRADUAÇÃO EM ENGENHARIA MINERAL NA UFOP (UM RETROSPECTO) [PDF]
Busca-se no Programa de Pós-graduação em Engenharia Mineral (PPGEM) da Universidade Federal de Ouro Preto (UFOP) oferecer um nível de ensino que se destaque no âmbito da formação de especialistas em Engenharia de Minas, com foco em Tratamento de Minérios
Fábio de São José +3 more
doaj +2 more sources
Weighted Single-Step GWAS Reveals Genetic Mechanisms Underlying Pregnancy Loss in Early Nellore Heifers. [PDF]
ABSTRACT Pregnancy loss (PL) affects reproductive efficiency in beef cattle, yet its genetic architecture remains poorly understood in Bos indicus populations. Here, PL was defined as failure from pregnancy diagnosis to calving, capturing a window approximately 60 days after the breeding season.
Bis FC +6 more
europepmc +2 more sources
EFFECT OF Ca2+ AND Mg2+ IONS ON THE REVERSE CATIONIC FLOTATION OF ITABIRITIC IRON ORE
In this work the effect of the Ca2+ and Mg2+ ions, added as salts of chlorine, on the reverse cationic flotation at pH 10.5 of an itabiritic iron ore sample was evaluated.
Daniel Geraldo da Cruz +3 more
doaj +1 more source
CHAIN EXTENDER AND EMULSIFIER APPLICATION IN IRON ORE FLOTATION [PDF]
The present study aims to evaluate the reverse flotation performance of iron ore, using collector (amine), in the presence and absence of chain extender (diesel oil) and emulsifier (sodium lauryl sulfate).Six tests were realized with duplicate.
José Pedro da Silva +2 more
doaj +1 more source
HANDLING, STORAGE AND IRON ORE QUALITY [PDF]
This paper aims to identify handling and storage impact in iron ore quality, in their physical and chemical characteristics most important for a mining.
Fabiana Fonseca Fortes +1 more
doaj +1 more source
Essa pesquisa apresenta uma análise do perfil dos egressos do Programa de Pós-Graduação em Engenharia Mineral da Universidade Federal de Ouro Preto (PPGEM/UFOP). Para tal, foi realizada uma pesquisa que consistiu no envio de um questionário online para os egressos do PPGEM/UFOP. O questionário foi respondido por 79 egressos do programa.
Carlos Alberto Pereira +3 more
openaire +1 more source
ITERATIVE CALCULATION OF CIRCULATING LOAD IN CLOSED-CIRCUITS [PDF]
A problem in mass balance resolution in mineral processing plants is the circulation load in closed-circuits. A family of methods which can be used to solve the circulating load is the iterative methods.
André Carlos Silva +2 more
doaj +1 more source
PERFILAGEM ELÉTRICA DE DESAGUAMENTO DE AREIA INDUZIDO POR VIBRAÇÃO
Resumo: A perfilagem eletrorresistiva da umidade no leito de areia quartzosa sobre tela vibratória em escala piloto foi tratado aqui. No que tange à configuração do eletrodos para medição de eletrorresistividade, o arranjo Wenner alfa clássico foi usado,
Jonathan Leandro Reis +2 more
doaj +1 more source
First record of Sooty Tern, Onychoprion fuscatus (Linnaeus, 1766) (Laridae, Charadriiformes), from São Paulo state, Brazil [PDF]
Sooty Tern, Onychoprion fuscatus (Linnaeus 1766), is a rare species along the Brazilian coast due to oceanic habits. We report the first documented record of this species from São Paulo state, southeastern Brazil.
Juarez de Castro Cabral +9 more
doaj +3 more sources
EMPIRICAL MODEL FOR HYDROCYCLONES CORRECTED CUT SIZE CALCULATION [PDF]
Hydrocyclones are devices worldwide used in mineral processing for desliming, classification, selective classification, thickening and pre-concentration.
André Carlos Silva +2 more
doaj +1 more source

