Results 21 to 30 of about 21,949 (310)

Variations in radiocarbon ages of various organic fractions in core sediments from Erhai Lake, SW China [PDF]

open access: yes, 2003
Radiocarbon dating was performed for the extracted organic fractions (cellulose-rich and humic acid fractions of plant fragment; fulvic acid, humic acid and humin fractions of humus substance) and shell from core sediments of the Erhai Lake, SW China ...
Xu, S., Zheng, G.
core   +1 more source

Biological conversion of low-grade coal discard to a humic substance-enriched soil-like material

open access: yesInternational Journal of Coal Science & Technology, 2017
A mutualistic relationship between grasses, coal-degrading fungi, and arbuscular mycorrhizal fungi was proposed to account for the phyto-biodegradation of coal discard. In this study pot trial experiments were carried out to confirm transformation of the
Lerato Mary Sekhohola   +1 more
doaj   +1 more source

Effects of Supplemental Benzoic Acid, Bromelain, Adipic Acid, and Humic Substances on Nitrogen Utilization, Urine pH, Slurry pH, and Manure Odorous Compounds in Pigs

open access: yesAnimals, 2023
The objective was to evaluate the effects of benzoic acid, bromelain, adipic acid, and humic substance supplementation on nitrogen balance, urinary pH, slurry pH, and manure odorous compounds in pigs.
Seung Bin Yoo   +3 more
doaj   +1 more source

Resistance of Soil Organic Matter in “Humic A Horizons” of the Mountainous Region in the State of Rio De Janeiro

open access: yesFloresta e Ambiente, 2020
Soils with high organic carbon content, such as those with “humic A horizon”, occur in different regions of Brazil. This study aimed to determine the quantitative and qualitative characteristics of organic matter regarding the humic A horizon under ...
Ademir Fontana   +5 more
doaj   +1 more source

Mobility of antimony, arsenic and lead at a former mine, Glendinning, Scotland [PDF]

open access: yes, 2015
Elevated concentrations of antimony (Sb), arsenic (As) and lead (Pb) in upland organic-rich soils have resulted from past Sb mining activities at Glendinning, southern Scotland. Transfer of these elements into soil porewaters was linked to the production
Farmer, John G.   +3 more
core   +1 more source

Interaction between systemic insecticide and humic substance applied to Conilon coffee seedlings [PDF]

open access: yesRevista Ceres
The objective of the study was to evaluate Conilon coffee seedlings treated with a systemic insecticide and a humic substance, both of which have growth-promoting functions.
Gabriel Barbieri Rampinelli   +5 more
doaj   +1 more source

The Positive Effects of Humic/Fulvic Acid Fertilizers on the Quality of Lemon Fruits

open access: yesAgronomy, 2022
Humic acid (HA) is a kind of organic substance that has shown good effects in regard to promoting crop growth. In the current study, the influences of three kinds of fertilizers mainly containing humic/fulvic acids, including water-soluble fertilizer ...
Xiaoying He   +6 more
doaj   +1 more source

A critical review of resource recovery from municipal wastewater treatment plants : market supply potentials, technologies and bottlenecks [PDF]

open access: yes, 2020
In recent decades, academia has elaborated a wide range of technological solutions to recover water, energy, fertiliser and other products from municipal wastewater treatment plants.
Dewulf, Jo   +5 more
core   +1 more source

Challenges for the development of a biotic ligand model predicting copper toxicity in estuaries and seas [PDF]

open access: yes, 2012
This is the author's accepted manuscript. The final published article is available from the link below. Copyright @ 2011 SETAC.An effort is ongoing to develop a biotic ligand model (BLM) that predicts copper (Cu) toxicity in estuarine and marine ...
de Polo, A, Scrimshaw, MD
core   +1 more source

Physical, chemical, and mineralogical attributes and organic fractions of biogenic aggregates of earthworms and toposequence of Inceptisol in semi-arid region

open access: yesCiência e Agrotecnologia, 2021
Earthworms are known to improve soil fertility by altering the physicochemical properties of soil. However, the changes in properties of biogenic aggregates (produced by earthworms) in regions with different vegetation covers and soils of Inceptisol ...
Eula Paula da Silva Santos   +5 more
doaj   +1 more source

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