Results 51 to 60 of about 11,607 (259)
Revista Brasileira de Ciência do Solo, 2009 As turfeiras são Organossolos que resultam de condições ecológicas ideais ao acúmulo de material orgânico, controladas pelos sistemas geomorfológicos e processos geológicos e climáticos globais.
Alexandre Christófaro Silva +5 more
doaj +1 more source
Bioscience Journal, 2019 Soil organic matter has a strong relation to total organic carbon, and about 85% of organic carbon consists of humic substances (HS), classified as humin (HU), humic (HA) and fulvic acids (FA), and denominated as recalcitrant carbon in soil.
Joseph Elias Rodrigues Mikhael +4 more
doaj +3 more sources
International Journal of Bio-Resource and Stress Management, 2023 An experiment was conducted in the experimental farm at School of Agricultural Sciences and Rural Development, Medziphema, Nagaland to evaluate the impact of different nutrient management practices on content and quality of soil humus in a newly ...
Manoj Dutta, B. S. Chauhan
doaj
EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge. [PDF]
, 2015 The spectroscopic characteristics (DRIFT, UV-visible and EPR) of humic fractions were studied during composting of sawdust and paper mill sludge. Infrared spectroscopy reveals a compost rich in hydroxyl and alkyl groups and carboxylates and carbohydrates.
FUKAMACHI, C. R. B. +3 more
core +1 more source
Revista Brasileira de Ciência do Solo, 2016 Soil organic matter (SOM) plays a key role in maintaining the productivity of tropical soils, providing energy and substrate for the biological activity and modifying the physical and chemical characteristics that ensure the maintenance of soil quality ...
Joyce Reis Silva +4 more
doaj +1 more source
Química Nova, 1999 The radiocarbon dating of the soil organic matter (SOM) is a polemic subject, due mainly to the complexity of the formation of the soils and to the variable contamination from several sources.
Susy Eli Marques Gouveia +2 more
doaj +1 more source
Geosciences, 2021 Tufa is a fresh-water surface calcium carbonate deposit precipitated at or near ambient temperature, and commonly contains the remains of macro- and microphytes. Many Holocene tufas are found along the Zrmanja River, Dalmatian karst, Croatia.
Jadranka Barešić +6 more
doaj +1 more source
Humins from Biorefineries as Thermoreactive Macromolecular Systems [PDF]
ChemSusChem, 2018 AbstractConversion of lignocellulosic biomass often brings about the formation of several side products. Among these, a black and viscous coproduct known as humins is formed on acidic treatment of polysaccharides. To improve the efficiency of this process from an economical and environmental perspective, new solutions for humins valorization are ...
Sangregorio, Anna +3 more
openaire +3 more sources
Smart Molecules, EarlyView.This review summarizes the progress in pH‐dependent electrochemical oxidation of 5‐hydroxymethylfurfural for value‐added chemical production. It highlights how pH dictates reaction mechanisms and product selectivity, discusses strategies for designing effective electrocatalysts tailored for alkaline, near‐neutral, or acidic electrolytes, and explores ...
Peiyun Zhou +4 more
wiley +1 more source
Untangling nutrient co‐regulation of ombrotrophic peatland development
Boreas, EarlyView.Multi‐method (FTIR, FT‐NIR and TGA) approaches characterizing the organic peat constituents at Holcroft Moss reveal a record of switches that reflect broadly hydroclimate variability governing the decomposition patterns. There are periods, however, where hydroclimate does not fully explain the variability observed and instead changes appear linked to ...
Richard C. Chiverrell +6 more
wiley +1 more source