Results 11 to 20 of about 21,286 (231)

Organic Matter Content and Composition of Soils with Stagnic Properties From Bulgaria [PDF]

Bulgarian Journal of Soil Science, 2016
This paper deals with the contents and composition of organic matter in soils with stagnic properties. Study on the content and composition of soil organic matter, shows that these soils have low content of organic carbon.
Biser Hristov, Ekaterina Filcheva, Plamen Ivanov   +2 more
doaj   +1 more source

Chemical properties of peat in three peatlands with balneological potential in Estonia [PDF]

Estonian Journal of Earth Sciences, 2011
Peat and various peat preparations have been successfully used in balneology. When considering the biological effects of peat, humic substances have been found to be of particular importance.
Mall Orru, Monika Übner, Hans Orru
doaj   +1 more source

Directed Synthesis of Humic and Fulvic Derivatives with Enhanced Antioxidant Properties

Agronomy, 2021
Redox moieties, which are present in the molecular backbone of humic substances (HS), govern their antioxidant properties. We hypothesized that a directed modification of the humic backbone via incorporation of redox moieties with known redox properties ...
Alexander B. Volikov, Nikita V. Mareev, Andrey I. Konstantinov, Alexandra A. Molodykh, Sofia V. Melnikova, Alina E. Bazhanova, Mikhail E. Gasanov, Evgeny N. Nikolaev, Alexander Ya. Zherebker, Dmitry S. Volkov, Maria V. Zykova, Irina V. Perminova   +11 more
doaj   +1 more source

Biomineralization of primary carbonate cements: a new biosignature in the fossil record from the Anisian of Southern Italy

Lethaia, EarlyView., 2021
Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido, Matteo Sposato, Giuseppe Palladino, Alessandro Vescogni, Domenico Miriello   +4 more
wiley   +1 more source

Characterization of coal-based fulvic acid and the construction of a fulvic acid molecular model

RSC Advances, 2020
Fulvic acid (FA) is composed of many molecular units with similar characteristic structures. The characterization and molecular model construction of coal-based FA is the key for the scientific basis and applied science of FA.
Guan-qun Gong, Xin Yuan, Ying-jie Zhang, Ya-jun Li, Wei-xin Liu, Ming Wang, Yu-feng Zhao, Liang-wei Xu   +7 more
openaire   +3 more sources

Effects of Methane Fermentation on Spectral Properties of Fulvic Acid Extracted from Peat through Liquid Acid Precipitation

Journal of Chemistry, 2020
The effects of acid precipitation with different liquid acids on spectral properties of fulvic acid extracted from peat was studied to select the most appropriate liquid acid for the acid precipitation step of the alkali solution acid precipitation ...
Li-Tong Ma, Ya-Nan Lu, Ya-Xiong Wang
doaj   +1 more source

Etude sur les acides fulviques extraits d'eaux superficielles françaises - Extraction, caractérisation et réactivité avec le chlore [PDF]

, 1990
Après avoir présenté quelques données bibliographiques sur les substances humiques aquatiques, l'extraction de plusieurs substances humiques issues de onze eaux de surface françaises, est discutée en terme de rendements d'extraction.
Croue, J. P., Doré, M., Legube, B., Xiong, F.   +3 more
core   +1 more source

Use of biologically active substances in hops

Plant, Soil and Environment, 2018
In four-year experiments, hop was treated with 7 biologically active substances in two terms during vegetation: Lignohumate max (a mixture of humic acids and fulvic acids), Lexin (a mixture of humic acids and fulvic acids enriched with auxins), Lexenzym (
Pavel PROCHÁZKA, Přemysl ŠTRANC, Kateřina PAZDERŮ, Jan VOSTŘEL, Jan ŘEHOŘ   +4 more
doaj   +1 more source

Biostimulants derived from organic urban wastes and biomasses: An innovative approach

Frontiers in Chemistry, 2023
We used humic and fulvic acids extracted from digestate to formulate nanohybrids with potential applications in agronomy. In order to obtain a synergic co-release of plant-beneficial agents, we functionalized with humic substances two inorganic matrixes:
Alessia Giordana, Mery Malandrino, Alfonso Zambon, Gigliola Lusvardi, Lorenza Operti, Giuseppina Cerrato   +5 more
doaj   +1 more source

Controls on the composition and lability of dissolved organic matter in Siberia's Kolyma River basin [PDF]

, 2012
High-latitude northern rivers export globally significant quantities of dissolved organic carbon (DOC) to the Arctic Ocean. Climate change, and its associated impacts on hydrology and potential mobilization of ancient organic matter from permafrost, is ...
A. Davydova, Alling, Amon, Aufdenkampe, Balcarczyk, Benner, Bertilsson, Boyer, Bro, Brown, Bélanger, Cauwet, Coble, Coble, Coble, Cory, Cory, Cory, Dittmar, E. Bulygina, Fellman, Fellman, Fellman, Finlay, Frey, Geller, Gibson, Gordeev, Guo, Hansell, Helms, Hernes, Hernes, Holmes, Holmes, Hood, Hornberger, Inamdar, Kieber, Kimble, Lafrenière, Laudon, Letscher, Lindsay, Lobbes, McGlynn, McGuire, McKnight, McKnight, Miller, Mopper, Murphy, N. Zimov, Neff, O'Donnell, Opsahl, Opsahl, Opsahl, Osburn, P. J. Mann, Peterson, R. G. M. Spencer, R. M. Holmes, Raymond, S. Davydov, S. Zimov, Sierra, Spencer, Spencer, Spencer, Spencer, Stedmon, Stedmon, Stedmon, Stedmon, Stone, Striegl, Striegl, Stubbins, Tarnocai, Tranvik, Walker, Weishaar, Wu, Zimov   +84 more
core   +1 more source