Geochemical characterisation of clastic sediments in Kompina (N'kapa Formation, NW Douala Basin, West Cameroon): Implication for provenance, paleoweathering and sediment maturity [PDF]
Heliyon, 2023 Chemical analyses were carried out on clastic sedimentary rocks in Kompina (N'kapa Formation of the NW, Douala Basin, West Africa) to disclosed the composition of their source rock, characterised their tectonic domains, decipher the intensity of the past
Florence Njinto Kwankam +9 more
doaj +2 more sources
A protocol for lixiviation of micronized plastics for aquatic toxicity testing [PDF]
Chemosphere, 2023 Plastics contain various types and amounts of additives that can leach into the water column when entering aquatic ecosystems. Some leached plastic additives are hazardous to marine biota at environmentally relevant concentrations. Disparate methodological approaches have been adopted for toxicity testing of plastic leachates, making comparison ...
Kuddithamby Gunaalan +2 more
exaly +5 more sources
From Green to Brown: Characterization of the Fast Alteration of Modern Greenish Enamels in Glass Windows. [PDF]
ChempluschemSpots and stains appeared on the modern green enamel from different stained‐glass windows as a consequence of environmental alteration. The multianalytical characterization showed a 3‐step alteration mechanism divided into Pb2+ lixiviation from the enamel, formation of hydrocerussite (2PbCO3·Pb(OH)2), and transformation into scrutinyite (α‐PbO2) and ...
Palomar T +7 more
europepmc +2 more sources
Novel Graphitic Oxynitrides as Photocatalysts for Sustainable H2 Production and CO2 Valorization. The Importance of Self-Assembly for Catalytic Activity. [PDF]
ChemSusChemA novel subclass of graphitic oxynitrides, easily generated from otherwise abundant prebiotic monomers, namely cyanamide and glyoxal, debut in the scenario of sustainable heterogeneous catalysts, as demonstrated through applications to the highly demanding H2 and CO2 agendas.
Lavado N +7 more
europepmc +2 more sources
Global Bias-Aware Synthesis of Meta-Analyses Reveals Agroforestry's Potential for Improving Soil Health. [PDF]
Glob Chang BiolThis second‐order meta‐analysis synthesizes evidence across diverse agroforestry systems (silvoarable, silvopastoral, tree‐landscape features, and perennial shaded systems) to assess their effects on multiple soil health attributes, including soil organic carbon, biological, chemical, and physical properties, water regulation, nutrient leaching, and ...
Camille Manon R +6 more
europepmc +2 more sources
Controlling Selectivity at the First Hydrogenation Level: Synthesis of 3-Hydroxyisoindolines by Heterogeneously Silver-Catalyzed Monohydrogenation of Phthalimides. [PDF]
Adv Sci (Weinh)3‐Hydroxylactams are obtained from phthalimides through a heterogeneous catalyzed chemoselective hydrogenation, able to stop the process at the first hydrogenation level. By using a rationally designed [Ag/Al2O3] recyclable solid nanocatalyst, a wide range of cyclic hemiamidals are accesed through a full atom‐economical reaction that preserves (hetero ...
Lluna-Galán C +2 more
europepmc +2 more sources
Anais da Academia Brasileira de Ciências, 2022 Boulders are an important material in debris flow and their source is coupled with spheroidal weathering profiles that produce corestones. The goal of this work was to establish the geochemical transformations that produced corestones and distinguished ...
CARLA S. SILVEIRA +4 more
doaj +1 more source
Évaluer les risques de fuite d'une barrière multicouche d'une aire de lixiviation en tas [PDF]
Sciences, Eaux & Territoires, 2012 Il y a une tendance dans l'industrie minière vers une utilisation accrue de l'évaluation des risques, aux différents stades d'un projet minier : c'est le cas de l'utilisation des géosynthétiques dans le domaine minier, par exemple sur les aires de ...
D. GUYONNET +3 more
doaj +2 more sources
Semicontinuous Lixiviation Process for Compound Extraction from Cannabis sativa grown in Colombia
Ingeniería e Investigación, 2021 The extraction of compounds present in Cannabis sativa biomass from Colombian crops was studied using a semi-continuous lixiviation process. To this effect, three extraction stages were implemented, in which successive transfers were carried out at fixed
Oscar Yecid Buitrago Suescún +1 more
doaj +1 more source
Parameters of Transportation of Tailings of Metals Lixiviating [PDF]
E3S Web of Conferences, 2017 The article shows that the change in the situation in the metals market with a steady increase in production volumes is intensified against the tendency of the transition of mining production from underground mining to underground mining for a certain group of ores.
Golik Vladimir, Dmitrak Yury
openaire +2 more sources