Results 91 to 100 of about 5,200 (192)
Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 7, July 2026.Abstract We investigated temporal changes in operational Fe pools and their association with soil organic carbon (SOC) fractions in an estuarine soil affected by the deposition of iron‐rich mine tailings over 6 years in Southeast Brazil. Sequential Fe extractions revealed a 56% decrease in Fe extracted with citrate–bicarbonate–dithionite alongside a 50%
Francisco Ruiz +6 more
wiley +1 more source
Petrografia e química mineral de rochas de alto grau da Serra da Cangalha e adjacências, sul do Espírito Santo [PDF]
, 2018 A área do trabalho, localiza-se nas proximidades do município de Guaçuí, sul do Espírito Santo. Geologicamente se situa na zona de transição entre as faixas móveis Araçuaí e Ribeira, zona de contato entre rochas granulíticas paleoproterozoicas do ...
Vieira, Gabriel Figueiredo Cellier
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Revista de Metalurgia, 2017 La biolixiviación es el proceso mediante el cual se extrae cobre de minerales sulfuros de baja ley usando microorganismos. La lixiviación química se aplica preferentemente para extraer cobre de minerales oxidados o mixtos, pero no existe información de ...
Ronald Huarachi-Olivera +8 more
doaj +1 more source
Global Change Biology, Volume 32, Issue 7, July 2026.Based on a global analysis of 1921 soil samples, we show that agricultural management acts as a powerful ecological filter reshaping microbial communities. Land use and inputs—pesticides and fertilizers—drive a functional shift toward opportunistic pathogens and fragmented, less connected microbial networks, potentially compromising soil ecosystem ...
Zaki Saati‐Santamaría +88 more
wiley +1 more source
Biology and Life Sciences ForumThe circular economy has been a strategy for diminishing waste and improving the use of natural resources and energy in different industrial sectors.
Selene Isabel Alvarez-Chávez +7 more
doaj +1 more source
International Journal of Analytical Chemistry, 2015 A method is presented for magnetic solid phase extraction of tartrazine from nonalcoholic beverages. The method involves the extraction and clean-up by activated carbon covered with magnetite dispersed in the sample, followed by the magnetic isolation ...
José A. Rodríguez +4 more
doaj +1 more source
, 2018 The São João Granite (SJG) is an anorogenic batholith that intrudes Archean units of the Rio Maria Domain, southeastern Amazonian Craton. Among the four petrographic facies, two of them were analyzed in scanning electron microscopy: biotite-amphibole ...
MELO, Leandro Jorge Tavares
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Petrografia e química mineral do Stock Granítico Serra do Barriga (Sobral, CE, nordeste do Brasil)
, 2017 The Serra do Barriga Granitic Stock (SGSB), located at NNW of the Ceará, northeast of Brazil, presents faciological variation that permits commercial exploitation in four types of ornamental rocks: Rosa Iracema (RI), Rosa Olinda (RO), Branco Savana (BS ...
MATTOS, Irani C. +2 more
core +1 more source
, 2020 O Complexo Inhapi consiste em uma sequência metavulcanossedimentar, aflorante em uma área de 3000 km2, presente no Domínio Pernambuco-Alagoas, porção sul da Província Borborema.
Santos, Milena Ítala Batista dos
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Química Mineral de Leucomicrogranitos Neoproterozóicos do Domínio Rio Grande do Norte [PDF]
Geochimica Brasiliensis, 2013 Leucomicrogranitos relacionados ao ciclo Brasiliano são de ampla distri-buição no Domínio Rio Grande do Norte da Província Borborema, nordeste do Brasil.
Antonio Carlos Galindo +2 more
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