Results 41 to 50 of about 8,205 (244)
Pesquisa Agropecuária Tropical, 2007 <!-- @page { margin: 2cm } --> <p class="western" align="justify">A contaminação de águas subsuperficiais por agrotóxicos decorre principalmente da lixiviação de seus resíduos. Neste trabalho, estudou-se a lixiviação dos herbicidas imazamox e
Hugo A. Ruiz +3 more
doaj +1 more source
Archaeometry, EarlyView.ABSTRACT Geochemical data compiled from dried sediments from three water reservoirs at the ancient Maya city of Ucanal, Petén, Guatemala, reveal low to undetectable fecal biomarker concentrations. These low concentrations may be the result of the aerobic decay of sterols combined with well‐managed waste disposal practices.
Jean D. Tremblay +3 more
wiley +1 more source
Pesquisa Agropecuária Tropical, 2007 <!-- @page { margin: 2cm } --> <p class="western" align="justify">O uso de herbicidas nos cultivos agrícolas tem aumentado progressivamente. Concomitantemente, houve também uma crescente preocupação com o meio ambiente, no sentido de prevenir
Antônio Alberto da Silva +3 more
doaj +1 more source
Gestión de Déchets Miniers [PDF]
, 2005 L'objet de mon travail concerne l'exploitation minière et plus particulièrement du Drainage Minier Acide (DMA). Le premier travail expérimental est organisé autour de deux axes : - des essais de terrain mettant en lumière la présence de DMA sur le ...
Palacios i Ubach, Nuria
core
Brazilian Journal of Radiation Sciences, 2020 This work refers to determination of thorium and uranium isotopes in the mining lixiviation liquor samples. The analytical procedure involves sample preparation steps for rare earth elements, thorium and uranium separation, besides alpha spectrometry ...
Aluisio Souza Reis +1 more
doaj +1 more source
Metals, 2023 The role of the tartrate ion in the extraction of copper from oxidized ore in aqueous alkaline medium is first reported. This was demonstrated by a sequential evaluation of the following: (i) The formation of an ionic complex resulting from the ...
Félix J. Sueros Velarde +3 more
doaj +1 more source
Metal extraction from ore benefication codas by means of lixiviation in a disintegrator [PDF]
, 2015 Laboratory experiments results of extraction of polymetals from ore benefication codas are given. The concept combined in time and space of chemical enrichment and mechanical activation of minerals in a disintegrator is proved. The regression analysis of
Golik, V. I. +2 more
core
International Journal of Food Science, Volume 2026, Issue 1, 2026.Fresh‐cut fruits are susceptible to the proliferation of emerging pathogenic bacteria such as Listeria monocytogenes, causing public health concerns. However, the demand for these products has been intensifying in recent years; for this reason, there is greater interest in developing methods that guarantee their microbiological safety and maintain ...
Misael Odin Vega-García +8 more
wiley +1 more source
Inorganic-organic hybrids originating from organosilane anchored onto leached vermiculite [PDF]
Materials Research, 2013 The reactivity of clay minerals leached in grafting reactions was investigated. Precursor solids were prepared by treating the sodium vermiculites with nitric acid solutions at several concentrations.
Ana P. M. Alves +2 more
doaj +3 more sources
MATEC Web of Conferences, 2013 La présente étude a été menée dans le but de valoriser le zinc des résidus de lixiviation. Pour ce but, nous avons retenu la méthode goethite qui présente certains avantages.
Benarioua Younes
doaj +1 more source