Results 131 to 140 of about 64,537 (313)

Evaluation of the efficacy of humic acids to counteract the toxic effects of aflatoxin B1 in turkey poults. [PDF]

Front Vet Sci, 2023
Maguey-González JA, Nava-Ramírez MJ, Gómez-Rosales S, Ángeles ML, Solís-Cruz B, Hernández-Patlán D, Merino-Guzmán R, Hernandez-Velasco X, Hernández-Ramírez JO, Loeza I, Senas-Cuesta R, Latorre JD, Vázquez-Durán A, Du X, Méndez-Albores A, Hargis BM, Téllez-Isaías G.   +16 more
europepmc   +1 more source

Decoupling climate and human impacts on the nitrogen cycle during the Irish Bronze Age

Journal of Quaternary Science, EarlyView.
ABSTRACT Disentangling climate variability and human activity in past nitrogen cycling is key to understanding ecosystems. Previous studies in Ireland observed a widespread, permanent shift in terrestrial nitrogen cycling during Later Prehistory, potentially linked to intensifying land‐use.
Sarah Ferrandin, Gill Plunkett, Neil Ogle   +2 more
wiley   +1 more source

Relating Paramagnetic Properties to Molecular Parameters of Humic Acids Isolated from Permafrost Peatlands in the European Arctic. [PDF]

Molecules, 2023
Lodygin E, Vasilevich R, Abakumov E, Abakumov E.   +3 more
europepmc   +1 more source

Pyrolysis-gass chromatography-mass spectrometry of soil humic fractions: II. The high boiling point compounds [PDF]

, 1979
4 pages, 1 figure, 1 table, 16 references.-- Publicado en el apartado: Division S-3-Soil Microbiology and Biochemistry.Pyrolysis-gas chromatography-mass spectrometry studies of soil fulvic and humic acids were made.
Cert, Arturo, Martín Martínez, Francisco, Sáiz-Jiménez, Cesáreo   +2 more
core  

How the Physical and Chemical Properties Affect the Heavy Metal Content in Surface Water in Different Types of Peatlands

Land Degradation &Development, EarlyView.
ABSTRACT Only ~3% of the global land surface is covered by peatlands, yet more than one‐third of global soil carbon is stored in these ecosystems and contaminant filtration can be provided. The extent to which peat humification (Fibric–Hemic–Sapric) is linked to dissolved heavy metals in peatland surface waters has remained poorly quantified at a ...
Stanisław Łyszczarz, Norbert Szymański, Michał Jasik, Wojciech Piaszczyk, Andrzej Szlachta, Mirosław Żelazny, Ewa Błońska, Jarosław Lasota, Stanisław Małek   +8 more
wiley   +1 more source

Refining techniques for high‐frequency monitoring of chlorophyll a fluorescence in estuarine systems

Limnology and Oceanography: Methods, EarlyView.
Abstract Concentrations of the photosynthetic pigment chlorophyll a are commonly used as a proxy for phytoplankton biomass in aquatic systems. Traditional methods for extracting chlorophyll a in discrete samples limit measurement frequency, while in situ sensor technology provides high frequency chlorophyll a fluorescence measurements at a more ...
Nicole Dix, Hannah Nicklay, Jacob Cianci‐Gaskill, Shannon Dunnigan Kimmel, J. Silas Tanner, Kim Cressman, Steven E. McMurray, Yoshimi M. Rii, Rikke Jeppesen, Rachel Guy, Erik Smith   +10 more
wiley   +1 more source

Influence of Humic Acids on the Removal of Arsenic and Antimony by Potassium Ferrate. [PDF]

Int J Environ Res Public Health, 2023
Wang N, Li W, Wang N, Li M, Wang H.
europepmc   +1 more source

Microbially driven organic carbon cycling at the land−sea interface: Advances and an integrated study framework

mLife, EarlyView.
Abstract The land−sea interface is a vital component of global biogeochemical cycles, where microorganisms drive the cycling of carbon, nitrogen, and sulfur. This review synthesizes the research progress from representative land−sea interfaces to elucidate how the microbial community structure and metabolic function influence the mobilization ...
Quanrui Chen, Kai Tang, Zhili He, Meng Li, Jun Yang, Weidong Zhai, Qiang Zheng, Nianzhi Jiao   +7 more
wiley   +1 more source

Aumento del contenido de ácidos húmicos en un carbón de bajo rango a través de la oxidación con aire y con peróxido de hidrogeno o ácido nítrico Increase of the content of humic acids in a low rank coal by oxidation with air and with hydrogen peroxide or nitric acid

Química Nova, 2013
Low-rank coals are an important source of humic acids, which are important in retention processes of water and nutrients in plants. In this study coal samples of Montelibano, Colombia, were oxidized with air at different temperatures and subsequently ...
Ruben Anillo-Correa, Fredy Colpas-Castillo, Edgardo Meza-Fuentes   +2 more
doaj  

Changes in Metabolic Profile of Rice Leaves Induced by Humic Acids. [PDF]

Plants (Basel), 2022
Canellas NA, Olivares FL, da Silva RM, Canellas LP.   +3 more
europepmc   +1 more source