Results 31 to 40 of about 63,548 (216)
MoleculesHyaluronic acid and carboxymethyl cellulose are eco-friendly polysaccharides known for their excellent moisture retention properties, making them suitable components of agricultural fertilizers.
Gleb N. Trishkin +3 more
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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 +11 more
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Chemical and spectroscopic analysis of olive mill waste water during a biological treatment [PDF]
, 2007 The treatment of olive mill waste water was studied on the laboratory scale. Physico–chemical analyses showed the final products had a mean pH of 5.4 without neutralisation and 5.7 when lime was added to the process.
Bailly, Jean-René +5 more
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Geosciences, 2018 This article analyzes the lanthanum, cerium, samarium, europium, terbium, ytterbium, lutetium, uranium, and thorium content in humic acids within soil and paleosol surface horizons from the southern steppe in the Southern Urals.
Maria Dergacheva +3 more
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Polish Polar Research, 2020 Humic substances are polydisperse mixtures of structurally complex matters with different molecular weights. The complexity of molecular composition of humic substances is reflected through their physical and chemical properties and results in diverse ...
Lodygin, Evgeny, Vasilevich, Roman
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Stabilization of petroleum and oil emulsions by bioorganic compositions based on humic acids
RUDN Journal of Ecology and Life Safety, 2023 The stabilizing ability of humic acids isolated from reed fen peat of the Ryazan region in the relation to oil and petroleum products under various abiotic conditions of the aquatic environment has been studied.
Maria M. Gertsen +2 more
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Study of Hydrophobic Domains in Humic Acids [PDF]
, 2008 Fyzikálně-chemická povaha hydrofobních domén huminových kyselin byla studována z několika hledisek. K objasnění významu fluorescenčních spekter byly vzorky podrobeny sekvenční frakcionaci, která pomohla k částečnému objasnění vlivu vodorozpustných složek,
Čechlovská, Hana
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Extraction yield of humic substances from organic materials
Dyna, 2022 At present there is a great advance in the use of organic substances as fertilizers; humic substances are one of them with various forms of extraction.
Irina Pedroso-Rodriguez +5 more
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Ekológia (Bratislava), 2014 The article presents data on the elemental and functional composition of humic acids, their molecular weight characteristics, physical, chemical and acid-base properties. The sorption properties of humic acids towards Cd2+ and Pb2+ are studied.
Kuznetsova Irina +5 more
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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
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