Results 71 to 80 of about 944,278 (220)

Humus of reclaimed Cu post-flotation tailings Humus content and composition of soil from reclaimed Cu post-flotation tailings (Bor, Serbia) [PDF]

open access: yesZemljište i biljka
The aim of this work was to determine the content and composition of the humus in the Technosols from reclaimed post-flotation tailings of the Bor copper mine (Serbia).
Lilić Jasmina   +3 more
doaj   +1 more source

Environmental Drivers of Nontuberculous Mycobacteria in Tropical Freshwater Systems

open access: yesEnvironmental Microbiology, Volume 28, Issue 11, November 2026.
In tropical freshwater ecosystems, nontuberculous mycobacterial diversity and distribution is mainly driven by habitat and sample type, and local environmental factors such as sediment texture and depth. These findings highlight the importance of microhabitat conditions over broad biogeographic patterns in shaping mycobacterial communities.
Marine Combe   +8 more
wiley   +1 more source

Polyphenol‐Inspired Materials for Agricultural Applications

open access: yesAdvanced Materials, Volume 38, Issue 59, 22 October 2026.
This review outlines the use of polyphenol‐inspired materials for sustainable agriculture, highlighting their molecular design, interfacial assembly, structure–property relationships, and prospects toward precision agriculture, climate resilience, ecosystem protection, and circular bioeconomy strategies.
Haofu Liu   +8 more
wiley   +1 more source

The behaviour of diborane-reduced fulvic acids in flash pyrolysis [PDF]

open access: yes, 1991
7 pages, 3 figures, 1 table, 25 references.-- Publicado en el capítulo: Session 1: Isolation, Fractionation, and Characterization.-- Humic Substances in the Aquatic and Terrestrial Environment, Proceedings of an International Symposium, celebrado del 21 ...
Martín Martínez, Francisco   +3 more
core   +1 more source

Fractionation of fulvic acids: Characteristics and complexation with copper [PDF]

open access: yesEnvironmental Pollution, 1995
Two fulvic acid samples isolated from Suwannee river (International Humic Substance Society) and Feeitsuey reservoir were subjected to gel filtration chromatography (GFC) for molecular size fractionation. The GFC-eluted samples were separated into three groups corresponding to the molecular weight ranges: < 220, 220-1000, and 1000-4000.
Lin, C. F.   +3 more
openaire   +2 more sources

Synergistic Biotransformation of Low‐Rank Coal Into Chemical Feedstocks by Indigenous Fungi and Chemical Pretreatment

open access: yesChemistry &Biodiversity, Volume 23, Issue 10, October 2026.
Indigenous fungi Neurospora crassa and Penicillium simplicissimum, isolated from Pakistani subbituminous coal, are combined with chemical enhancers—NaOH and sodium acetate—to boost biosolubilization from 31%–45% to 51%–68% within 5 days. GC–MS and FT‐IR analyses reveal a broader diversity of organic compounds in treated coal, highlighting fungal ...
Samia Anjum   +8 more
wiley   +1 more source

Humic and Fulvic Acids and Their Potential in Crop Production [PDF]

open access: yes, 2014
Humic and fulvic acids may have uses in Iowa’s large-scale production systems to improve seedling health and plant response to stress. This publication discusses the benefits and limitations of these intriguing organic compounds in soybean production.
Wright, David, Lenssen, Andrew
core  

Humic Substances from sediments of Lobos Pond (Argentina). Isolation, Characterization and Limnological Implications

open access: yesEclética Química, 2018
Humic substances (HS) were isolated from the sediments of Lobos Pond (Argentina) using mild conditions to preserve their native structure. The HS (humic and fulvic acids) were characterized by means of elemental analysis and FTIR spectroscopy.
Roberto G. Choconi   +3 more
doaj   +1 more source

Cold‐adapted Ligninolytic Nanozyme Unveiling New Horizons in Black Liquor Treatment Under Mild Condition

open access: yesExploration, Volume 6, Issue 5, October 2026.
This work reports a cold‐adapted manganese‐based nanozyme with broad‐spectrum oxidase‐like activity, capable of efficiently degrading lignin and treating kraft black liquor at low temperatures without external oxidants, offering a sustainable and energy‐efficient strategy for industrial wastewater remediation. ABSTRACT Kraft black liquor, characterised
Qing Tian   +9 more
wiley   +1 more source

A comparative structural study of nitrogen-rich fulvic acids from various Antarctic lakes

open access: yes, 2017
Environmental contextFulvic acids are important naturally occurring organic materials, but unravelling their complex structures remains challenging.
Sahar Farzadnia   +2 more
core   +1 more source

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