Results 71 to 80 of about 3,638 (183)

Dielectric spectroscopy of aqueous solutions of fulvic acids [PDF]

open access: yes, 2005
Peer ...
González-Vila, Francisco Javier   +4 more
openaire   +2 more sources

Chemical and structural characterization of soil humic substances under agroforestry and conventional systems

open access: yesRevista Brasileira de Ciência do Solo, 2011
Studies have proven that the agroforestry systems in the semi-arid region of the State of Ceará, Brazil, induce an increase in soil organic C levels.
Gislane M. de Moraes   +4 more
doaj   +1 more source

Water-Stable Aggregates and Associated Carbon in a Subtropical Rice Soil Under Variable Tillage

open access: yesRevista Brasileira de Ciência do Solo, 2016
Tillage systems can influence C sequestration by changing aggregate formation and C distribution within the aggregate. This study was undertaken to explore the impact of no-tillage without straw (NT-S) and with straw (NT+S), and moldboard plow without ...
Hui-Ping Ou   +8 more
doaj   +1 more source

fulvic acid

open access: yes
Citation: 'fulvic acid' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.14703 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

A Use of Tritium-Labeled Peat Fulvic Acids and Polyphenolic Derivatives for Designing Pharmacokinetic Experiments on Mice. [PDF]

open access: yesBiomedicines, 2021
Badun GA   +9 more
europepmc   +1 more source

Spectral Characteristics Related to Chemical Substructures and Structures Indicative of Organic Precursors from Fulvic Acids in Sediments by NMR and HPLC-ESI-MS. [PDF]

open access: yesMolecules, 2021
López-Martínez VG   +6 more
europepmc   +1 more source

Humic acid from Shilajit – a physico-chemical and spectroscopic characterization [PDF]

open access: yesJournal of the Serbian Chemical Society, 2010
Shilajit is a blackish–brown exudation, consisting of organic substances, metal ions and minerals, from different formations, commonly found in the Himalayan region (1000–3000 m) from Nepal to Kashmir.
SURAJ P. AGARWAL   +4 more
doaj  

Spectroscopic characterization of humic and fulvic acids in soil aggregates, Brazil. [PDF]

open access: yesHeliyon, 2020
Machado W   +3 more
europepmc   +1 more source

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